Results with Savage 12 FV 6.5mm Creedmoor

[CFJunkie]

Here are the first results from my new 12 FV in 6.5mm Creedmoor.
These were the first rounds shot from this rifle so there may be some initial 'shooting in' effect, or it just could be the rifle prefers heavier bullets.
Note the gradual improvement from the first load to the 3rd load listed.

All loads were with Lapua Brass, CCI BR-4 primers and were shot at temperatures from 34 to 37 degrees at altitude of 250 ft. above sea level.

Load Description lists, in order, powder, charge, O.A.L., velocity in fps, trim length, and wf (exit time in msec).

Exit times were at the 12th reflection for the 26-inch barrel.

The second group in the 130 grain TMK may have been the result of a loose ring screw that I was sure I tightened to 30 in-lbs. with my old Fat Wrench.
I would have just chalked it off to 75 year old forgetfulness but the same thing happened on the scope rings on a new scope that I know I tightened with the same Fat Wrench on the new 12 FV .223 that is listed in another post. I think that my Fat Wrench may have have been jostled a bit too much from banging around 8 years in my range bag.

	Savage 12 FV 6.5 mm Creedmoor			5 round Groups			Sightron 36x42mm
# Grps	Load Description		Bullet	Weight	Velocity	Average	Median	St Dev	1	2	3	4
2	IMR4350 42.0 gr 2.850 2720 case 1.910 wf 1.361	Sierra Tipped Match King #7430		130	2720	0.473	0.473	0.077	0.418	0.527
2	IMR4350 37.4 gr 2.815 2683 case 1.910 wf 1.361		Hornady Match # 26331	140	2683	0.406	0.406	0.055	0.367	0.445
4	IMR4350 41.0 gr 2.807 2678 case 1.910 wf 1.361		Sierra Match King #1742	142	2678	0.358	0.359	0.040	0.315	0.334	0.384	0.399

[Lclevenger]

Wow looks like you have a really nice rifle there.


Sent from my iPhone using Tapatalk

[CFJunkie]

More data from the Mar 25th 2019 session with different bullets:

	Savage 12 FV 6.5 mm Creedmoor			5 round Groups			Sightron 36x42mm
# Grps	Load Description		Bullet	Weight	Velocity	Average	Median	St Dev	1	2	3	4
4	IMR4350 41.8 gr 2.815 130 Hornady ELD-M 2719 1.910 CCI BR-4 wf 1.361 * Lapua SRP 49/47 deg F.	Hornady Match # 26177		130	2719	0.362	0.369	0.095	0.240	0.351	0.387	0.468
3	IMR4350 41.3 gr 2/820 147 Hornady ELD-M 2659 1.910 CCI BR-4 wf 1.361 * Lapua SRP 47/44 deg F.		Hornady Match # 26333	147	2659	0.337	0.301	0.074	0.287	0.301	0.422

Today's average was 0.351 for 7 groups.
Mar 20th average was 0.398 for 8 groups.
Overall average for all groups (all bullet weights) is now 0.376 for 15 groups.

It appears that this rifle likes the heavier bullets, just like I had hoped.
My other 6.5mm CM 26-inch barrel 12 LRP also likes heavier bullets so this 12 FV can be the load development mule for the more expensive 12 LRP and take some of the work off its barrel.

Weight	Average	Median	St Dev
130	0.399	0.403	0.099
140	0.406	0.406	0.055
142	0.358	0.359	0.040
147	0.337	0.301	0.074

[williamjwolfjr]

I have the same rifle. The bolt required a rap with my palm to eject spent casing. I was going to take my bolt apart to check. I was told I may need an impact wrench first time disassembling. I stuck my 1/4” Allen wrench in and noticed I could turn bolt. It was loose from the factory. Could this have caused any issue? I disassembled and cleans and tightened bolt when I put back together. Thanks

[CFJunkie]

I noticed your post on the 110 rifle forum.

I have only had to rap the bolt to get the case to eject when there was high pressure.

I would suspect that a loose bolt may have been the cause of your problem.
Once the spacing changes, the lugs might be locking up.
Has it happened again after you tightened the bolt.

I would chat with a Savage technician on their web site and ask them.
I had good response from Savage when I found that the chamber on my 12 LRP 6.5mm was tight and causing pressure signs even when shooting light loads.
I had pictures and load information for each condition and they told sent me a shipping voucher to send the rifle back to them.
They bored that chamber a few thousandths and the problem was solved.

I hope tightening the bolt solved the problem.

[Robinhood]

I have the same rifle. The bolt required a rap with my palm to eject spent casing. I was going to take my bolt apart to check. I was told I may need an impact wrench first time disassembling. I stuck my 1/4” Allen wrench in and noticed I could turn bolt. It was loose from the factory. Could this have caused any issue? I disassembled and cleans and tightened bolt when I put back together. Thanks

If it(the BAS, Bolt Assembly Screw) was real loose it could have impacted the function of the primary extraction ramps. The bolt handle would probably have seemed very loose to you if that was the case. I have never heard of a new action having a loose BAS. I'm sure it could happen.

[CFJunkie]

More data from my 12 FV 6.5mm Creedmoor shot on the morning or April 2nd in northern Virginia
Temperatures were from 36 to 43 degrees F. with winds from 3 to 5 mph at altitude of 250 ft. above sea level.

All loads were using IMR4451 Enduron powder with CCI BR-4 primers and Lapua brass on their second reload.
Data under load description is the powder and charge, O.A.L., muzzle velocity, trim length, exit time of the bullet, and the temperature loaded/shot.

# Grps Load Description Bullet Weight Velocity Average Median St Dev 1 2 3 4 4 IMR4451 38.9 gr 2.856 2705 1.909 wf 1.361 * 41/40 deg F. Sierra Tipped Match King #7430 130 2705 0.406 0.411 0.086 0.317 0.348 0.474 0.484 4 IMR4451 38.8 gr 2.815 2664 1.911 wf 1.361 * 35/36 deg F. Hornady Match # 26331 140 2664 0.433 0.431 0.028 0.405 0.416 0.446 0.466 2 IMR4451 38.8 gr 2.813 2663 1.908 wf 1.361 * 44/43 deg F. Hornady Match # 26331 140 2663 0.448 0.448 0.121 0.362 0.533 2 IMR4451 38.6 gr 2.813 2662 1.910 wf 1.361 * 39/38 deg F. Berger Match # 26401 140 2662 0.505 0.505 0.054 0.467 0.543 Today's session averaged 0.438 for 12 groups. The first two sessions averaged 0.375 for 15 groups. I did tighten the action screws a bit since the first session. I guess I might have to loosen them up a bit back to about 35 in.-lbs. and see if they like the action screws a bit looser than 45 in.-lbs.
Here is a summary of all the loads shot to date by bullet weight. 5-Round Groups by Bullet Weight Weight Average Median St Dev 130 0.401 0.403 0.089 140 0.445 0.446 0.061 142 0.358 0.359 0.040 147 0.337 0.301 0.074

The third load was actually shot last and was the

[rmeyerwy]

Sweet, looks like you got a shooter!

[Marine]

My brother and I both have the FV12 in 22-250 and both shoot .250 groups with the right load and most everything is under .650. For under $300 on sale at Cabelas you cannot find anything as accurate as the FV12, it is truly a grand bargain.

[CFJunkie]

Marine,

I have a 12 LRP in 6.5mm Creedmoor that I paid $1,095 for and it shoots just slightly better than the 12 FV in 6.5mm Creedmoor that I paid $319.99 for.

I have a $1,280 NightForce Benchrest scope on the 12 LRP and a $425 Sightron fixed power 36X scope on the 12 FV.

The 12 LRP averages 0.364 for 529 5-round groups with a top 25 load average of 0.285 for 76 groups.
The 12 FV averages 0.404 for 27 groups over the first 9 loads.
That works out to $792 for a rifle to get the last 0.040 in average accuracy or 0.119 in top 25 accuracy.
If you include the cost of the scopes, it works out to $1,502 for the last 0.119 of top 25 accuracy.

I love to shoot the 12 LRP because it is so much fun to shoot, especially with the powder-bullet combinations that it really likes, but I have to agree that the 12 FV is an incredible bargain for a very accurate rifle.

[rmeyerwy]

Gotta love those 12v man!

My 223 with factory frontier 55gr. bthp put me in the 3" circle at 300, 400, 500 and 600 yards last Friday. Dang..it was fun!

Only thing I don't like is the weight of the barrel..but I sure like the barrel!

[CFJunkie]

More data from the 12 FV 6.5mm Creedmoor from Saturday morning Apr 13th in northern Virginia.
Temperature was 62 to 68 degrees from 8 AM to 11 AM with winds from dead calm to about 3 mph at an altitude of 250 ft above sea level.
All shots were at 100 yards with IMR4451 Enduron powder, Lapua Brass, and CCI BR-4 small rifle primers using a Sinclair F-Class Gen 3 bipod and a Protecktor rear rest from a bench.

Description shows powder and charge, O.A.L., trim length, exit time and temperatures loaded for and shot at.
Some of the bullets matched the bullets shot when I torqued the action screws tighter to 45 in.-lbs. and noticed a drop off in accuracy.
I loosened them back to 35 in.-lbs. for this morning's session.
A summary of the results with the two different torque settings are shown at the bottom.

# Grps.	Load Description	Bullet	Weight	Velocity	Average	Median	St Dev	1	2	3	4
4	IMR4451 38.9 gr 2.853 1.909 wf 1.361 * 64/64 deg F.	Sierra Tipped Match King #7430	130	2700	0.360	0.382	0.085	0.246	0.345	0.418	0.430
4	IMR4451 38.7 gr 2.812 1.908 wf 1.361 * 62/62 deg F.	Hornady Match # 26331	140	2664	0.403	0.388	0.075	0.330	0.374	0.401	0.506
4	IMR4451 38.9 gr 2.817 1.908 wf 1.361 * 66/66 deg F.	Sierra Match King #1742	142	2661	0.383	0.369	0.038	0.357	0.362	0.375	0.439
4	IMR4451 38.5 gr 2.810 1.907 wf 1.361 * 68/68 deg F.	Hornady Match # 26333	147	2638	0.410	0.433	0.057	0.326	0.432	0.433	0.449

Today's results averaged 0.389 with a 0.388 median and a 0.062 standard deviation.
Overall results to date, including the bad session with the tighter action screws now averages 0.398 for 43 loads and 13 different loads.

Torque on Action Screws	Avg	Median	St Dev	3 Gps.
35 In.-Lbs.	0.383	0.384	0.068	31
45 In.-Lbs.	0.438	0.456	0.071	12

[CFJunkie]

The following are the results with the Savage 12 FV 6.5mm Creedmoor shot in Northern Virginia on Thursday morning, June 20, at 100 yards. Temperatures from 76 to 86 degrees with winds from 3 to 7 mph. Altitude of the range is 250 feet above sea level.

The temperatures were warm enough again this morning to require extended time for the barrel to cool, even with a barrel fan inserted in the barrel, and since it was in the 80s a lot of the morning, the barrel never really got below 85 degrees. As a result, I only got to shoot 3 loads again today.

All rounds were shot using Lapua brass and CCI BR-4 primers with an 8-32X56mm Benchrest NightForce scope with a NP2-DD reticle. All bullets were loaded to achieve a 1.360 msec. exit time which should be the sweet spot for a 26-inch 3% carbon steel barrel with a 0.040-inch recessed crown. The action screws were torqued to 35 in.-lbs. prior to this session.

For this session, I loaded IMR4451 powder and I planned the seating depths so all the different bullets would achieve the same jump to the rifling – 0.020 – and then adjusted the seating depth by less than 0.005 thousandths to achieve the 1.360 exit time.

This morning I featured all Hornady 130 grain #26177, 140 grain #26331 and 174 grain #26333 ELD-M bullets.

The load description field shows the powder and charge, the O.A.L., the trim length, and the bullet exit time from the 26-inch barrel.

# Grps	Load Description	Bullet	Weight	Velocity	Average	Median	St Dev	1	2	3	4
3	IMR4451 38.9 gr 2.818 1.914 wf 1.360 * 73/76 deg. F. 35 in.-lbs.	Hornady ELD-M #26177	130	2698	0.332	0.280	0.111	0.256	0.280	0.459
4	IMR4451 38.9 gr 2.835 1.913 wf 1.360 * 76/78 deg. F. 35 in-lbs.	Hornady ELD-M #26331	140	2668	0.361	0.352	0.047	0.314	0.352	0.352	0.426
4	IMR4451 38.8 gr 2.863 1.911 wf 1.360 * 80/86 deg. F. 35 in.-lbs.	Hornady ELD-M #26333	147	2640	0.318	0.314	0.044	0.273	0.290	0.338	0.369
11					0.337	0.338	0.064

Today’s overall average of .337 was Just 0.002 worse than the 17ths results. It brings the overall average of 5 round groups with this rifle to 0.374.

The results were anything spectacular today but each session seems to be bringing the overall average down a bit.

This rifle now has over 1,000 rounds fired and 835 rounds measured and recorded with 167 groups that used three different powders, two action screw torque settings, and two different scopes.

Tomorrow, when I have a bit more time, I will gather and provide an analysis of the results to date so you can see how powders and bullets performed.

[CFJunkie]

As promised, here is a summary of the Savage 12 FV 6.5mm Creedmoor from its first use in mid March through the Jun 20 session now that there are 1,000 rounds down the barrel.


5 Round Groups Savage 12 FV 6.5 mm Creedmoor By Weight Hand Loads
----------------------------------------------------------- Best Load ---
# Grps Powder----- Bullet ----------------- Wgt.-- Avg. ----Avg, --Vel.
4 -------IMR 4350 Hornady Match # 26177 -- 130 --- 0.362 ---0.362 --2719
6 -------IMR 4451 Hornady Match # 26177 -- 130 --- 0.361 ---0.332 --2698
10------IMR 4350 Sierra TMK #7430 ----------130 --- 0.392 ---0.352 --2721
25------IMR 4451 Sierra TMK #7430 ----------130 --- 0.352 ---0.347 --2698
3 -------RL-17 ----Sierra TMK #7430 ----------130 --- 0.296 ---0.296 --2803
14------IMR 4451 Sierra TGK #4330 ----------130 --- 0.374 ---0.321 --2702
11------IMR 4350 Hornady Match # 26331 ---140 --- 0.409 ---0.419 --2683
21------IMR 4451 Hornady Match # 26331 ---140 --- 0.399 ---0.403 --2664
2-------RL-17 -----Hornady Match # 26331 ---140 --- 0.558 ---0.558 --2763
3-------IMR 4350 Berger Match # 26401 -----140 --- 0.395 ---0.395 --2684
9-------IMR 4451 Berger Match # 26401 -----140 --- 0.407 ---0.378 --2663
12------IMR 4350 Sierra Match King #1742 --142 --- 0.363 ---0.358 --2678
13----- IMR 4451 Sierra Match King #1742 --142 --- 0.362 ---0.324 --2663
3-------IMR 4451 Hornady ELD-X #2635 -----143 --- 0.298 ---0.298 --2667
10------IMR 4350 Hornady Match # 26333 ---147 --- 0.367 ---0.337 --2659
21------IMR 4451 Hornady Match # 26333 ---147 --- 0.388 ---0.373 --2638
167------------------------------------------------------- 0.374

	5-Round Groups			35 in.-lbs. torque
	Weight	Average	Median	St Dev	# Grps
	130	0.361	0.353	0.0699	54
	140	0.385	0.3685	0.0872	38
	142	0.362	0.362	0.0519	25
	143	0.298	0.316	0.0353	3
	147	0.381	0.372	0.0702	31
		0.369	0.367	0.0743	155
	Only for bullets in torque test			35 in.-lbs. torque
	Weight	Average	Median	St Dev	# Grps
	130	0.358	0.348	0.069	41
	140	0.385	0.3685	0.087	38
		0.370	0.365	0.083	86
	5-Round Groups			45 in.-lbs. torque
	Weight	Average	Median	St Dev	# Grps
	130	0.406	0.411	0.086	4
	140	0.455	0.456	0.062	8
	142
	147
		0.438	0.456	0.070	12

Group Averages by Bullet by O.A.L. Range - 35 in. Lbs. Torque
Bullet -------------------- Wgt. 2.805 to 20 2.821 to 30 2.831 to 40 2.841 to 50 2.851 to 65 Avg.-Best Jump Jump
Hornady Match # 26177 130 -------0.361------------------------------------------------------------- - ---------- 0.024
Sierra TMK #7430 -------130 ---------------------------------------------0.377------ 0.350 --------- 0.009 ----- 0.005
Sierra TGK #4330 -------130 --------------------0.395------------------------------- 0.321 --------- 0.074 ----- 0.020
Berger Match # 26401 --140 -------0.378 ------0.386 ----------------------------------------------- 0.026 ----- 0.056
Hornady Match # 26331 140 -------0.403 ------0.417 -----0.361------ 0.346 ----- 0.558 --------- 0.046 ----- 0.024
Sierra SMK #1742 -------142 -------0.372 ------------------0.338 ------0.357 ---------------------- 0.024 ----- 0.023
Hornady ELD-X #2635---143 ---------------------------------------------------------- 0.298 -------- ------------- 0.049
Hornady Match # 26333 147 -------0.378 ------0.361 -----0.394 ----------------------------------- 0.020 ----- 0.024

[DesertDug]

Great data, thanks for sharing.

1000 rounds with 5 round groups averaging 0.374" with a stock 12fv impressive indeed.

Will you keep up the testing till the groups start to opening and start to show that the barrel is getting shot out? Any predictions on what round count this will start to show?

[CFJunkie]

Now that the 12 FV 6.5mm Creedmoor rifle has shot over 1.000 rounds since March 21^st, I think it is time to close up this thread and finish my experiment with the factory plastic stock.

I believe it is now time to change the factory stock with plastic bedding and lots of flex to a more stable, aluminum rail, aluminum bedded stock to see if the more stable stock improves performance.
I’m still trying to decide whether to go with an Oryx aluminum frame stock or a more classic stock like a Hogue, B&C or Choate.
The Oryx stock makes the conversion to AICS mags very easy, but I am concerned that the flat stock without any drop will require higher rings to be able to get a comfortable cheek weld.
It is either an Oryx with an AICS detachable mag or sticking with the hidden mag on the 12 FV.
Actually, the hidden mag isn’t much of a problem with the 6.5mm Creedmoor 12 FV but the reduced space caused by the flange on the bolt of the .223 12 FV makes the hidden mag a PITA.

In this final post, I thought that it would be good to look at timeline of the performance over the 16 range sessions.



As some others have reported on different threads, it seems to take a few groups for a new Savage to settle down, and my first session produced much larger groups than succeeding sessions. But I might simply have needed to get comfortable with a new combination of stock, barrel, and mounted scope.

Interestingly, another increase in group size occurred in the first session after the original Sightron scope was changed to a more expensive NightForce Benchrest scope. Note that after the initial three sessions and after the incredible lapse in accuracy with one load on Jun 4th, the session averages with the NightForce scope improved significantly from that point onward when compared to the Sightron scope.
Along the way, new bullet types made slight changes in averages, but it wasn’t always to increase them, some of the more recent additions actually improved the session averages. Some of that improvement may have been due to the NightForce scope.

Based on this data, I don’t think that I can make the case for a 3X greater investment in the NightForce scope, but it is easier for me to achieve those group sizes with the NightForce scope, even though the NightForce has 32X maximum power compared to the Sightron scope’s 36X power. It is more comfortable getting behind the NightForce scope consistently but the results don’t show all that much improvement, although the accuracy time line shows that, except for one anomaly, there has been a steady improvement since I changed to the NightForce scope.

I think the most telling analysis of the general performance of the Savage 12 FV 6.5mm Creedmoor comes when the distribution of group sizes is performed without regard to bullet type, weight or powder.


The distribution is slightly skewed toward the higher values but has a close to normal distribution shape. The graph provides some indication of the overall accuracy of the rifle even considering the edge performance of shooter induced variations on the high side (probably due to one or two load anomalies) and one serendipitously small group result (just 0.005 smaller than 0.1) on the low end in which the shooter may have pulled an otherwise stray round to make a tighter group than normal.
Yeah, fortuitous errors sometimes produce a better group instead of a worse group. Charts like this tend to identify events like that.

[varget204]

Had a BC Medalist 6 stock on my Savage SA,6 mm creedmoor,Switched to a ORYX chassis,the chassis is rock solid,zero movement,Accuracy has improved.Highly recommend,wish i had gotten it before the BC[It has full length aluminum block;But needs Bedded to eliminate movement] I would bet money your groups will get better w/ one

[Evlshnngns]

For the people that are skeptical about barrel time, here is someone else working the numbers. Quickload conversation starts at 11min 35 sec.

Thanks for sharing the journey CFJunkie.

[CFJunkie]

I claimed when I provided the last results that I would close this thread and change the stock on the 12 FV 6.5mm Creedmoor. Well, I still wanted to shoot it and the new stock hasn’t arrived yet, so this post might be my last results.

The following are the results with the Savage 12 6.5 mm Creedmoor shot in Northern Virginia on Monday morning, June 24 and Monday morning June 25, at 100 yards. Temperatures on Monday were from 73 to 81 degrees with winds from calm to 3 mph. Temperatures on Tuesday morning were 79 to 82 with winds also calm to 3 mph. Altitude of the range is 250 feet above sea level. The Monday session was shared with testing the 12 FV .223 with 69 and 77 grain bullets so I had to complete the 12 FV 6.5mm Creedmoor session on Tuesday morning.

All rounds were shot using Lapua brass and CCI BR-4 primers with an 8x32x56mm NightForce scope with a NP-2DD reticle. All bullets were loaded to achieve a 1.360 msec. exit time which should be the sweet spot for a 26-inch 3% carbon steel barrel with a 0.040-inch recessed crown. The action screws were torqued to 35 in.-lbs. prior to this session.
For this session, I loaded IMR4451 Enduron powder and I planned the seating depths so all the different bullets would achieve the same jump to the rifling – 0.020 – and then adjusted the seating depth by less than 0.005 thousandths to achieve the 1.360 exit time.

On Monday morning I shot Sierra TGK 130 grain bullets and Hornady ELD-M 140 grain bullets. On Tuesday morning I shot Hornady ELD-X 143 grain bullets and ELD-M 147 grain bullets.

The load description field shows the powder and charge, the O.A.L., the trim length, and the bullet exit time from the 26-inch barrel.

# Grps	Load Description	Bullet	Weight	Velocity	Average	Median	St Dev	1	2	3	4
4	IMR4451 38.8 gr 2.824 1.914 wf 1.360 * 73/76 deg. F. 35 in.-lbs.	Sierra TGK #4330	130	2700	0.339	0.345	0.071	0.264	0.294	0.396	0.403
4	IMR4451 38.9 gr 2.840 1.911 wf 1.360 * 75/77 deg. F. 35 in-lbs.	Hornady ELD-M #26331	140	2667	0.343	0.349	0.017	0..318	0.344	0.353	0.355
4	IMR4451 38.8 gr 2.856 1.913 wf 1.360 * 78/78 deg. F. 35 in.-lbs.	Hornady ELD-X #2635	143	2655	0..325	0.308	0.046	0.230	0.306	0.310	0.392
4	IMR4451 37.7 gr 2.838 1.908 wf 1.360 * 82/82 deg, F.	Hornady ELD-M #26333	147	2641	0.379	0.366	0.062	0.322	0.340	0.392	0.460
16					0346	0.342	0.052

The two-day session didn’t have any spectacular results, but the overall average for all groups has now dropped to 0.371 from 0.374.
The 143 ELD-X bullets continue to impress but Tuesday’s results didn’t match the initial session average of 0.298. The combined average for the 143 ELD-X is now 0.313.

[CFJunkie]

I just checked the AICS mags for available O.A.L. and I am a bit concerned.

The .308 mag that I measured

the internal space in the mag and found

only 2.832 available for seating depth. I probably would have to leave 0.002 more space to keep tips from binding in the mag, that would mean I would have to restrict the O.A.L. of my loads to 2.830.
Best results with the 130 TMKs come at 2.846 & 2.850+ O.A.L.
Best results with the 140 ELD-M came at 2.842
Best results wiht the 143 ELD-X came at 2.863.
Best results with the 147 ElD-M came at 2.835 & 2.838.
So the O.A.L.s that my rifle shoots best would not be available to me.

I also measured the AICS mag. for the .223.
The available space for O.A.L. is over 2.540.
That it really great!
There is no way a .223 can be loaded that long so the magazine is not a limiting factor, even though I load some of my best 77 gr TMK loads out at 2.344.
If the Oryx stock gets picked, it will be with the 12 FV .223 not the 6.5mm Creedmoor or any of my .308s. The .308 AICS mag is just too limiting for my most accurate reloads.

I probably will need to switch to x-high rings for my Sightron scope because the rear stock is straight in line with the barrel, like an AR even though there is no need for it to be since there is no recoil spring tube to deal with. The Savage stocks are all canted down a bit so the rings don't have to be so high to get a good cheek weld.
Checking the rear stock on an Oryx, it is about 1/2 an inch higher than the Savage stock.
That will make the rings I have on the Sightron about 1/2 an inch too low making it impossible to get behind the scope with the current rings.

[varget204]

The ORYX has adjustable cheek rest,lots of adjustment

[DesertDug]

What make aics mag did you get to measure? My metal 308 AICS I got from x-caliber has an internal max lenght of 3.910" so there would be plenty of room. If lenght is only concern, you may check other mags.

[CFJunkie]

The mag I measured was an MDT. I eventually found an AICS mag from Accuracy International with internal dimensions that would support a 2.880+ O.A.L. so that will work fine.
I'm hoping that the high rings on the NightForce scope with the 56mm front objective will get the optical axis high enough to let me get behind the scope comfortably.
If not, I will have to find some extra high rings and they will be expensive.
I expect to try the Oryx stock on my 12 FV 6.5mm CM shortly.
We'll see if the sturdier, less flexible stock can outshoot the cheap factory plastic stock.

I have a set of extra high rings on the way for my .223 so I can try the Oryx on 12 FV .223 with the 36X42mm Sightron scope. I'm hoping that will make the optical plane high enough to get behind the scope. Medium high rings that shoot great on the 12 FV factory stock were way too low ion the Oryx.
Fortunately, the AICS magazine for the .223 has more O.A.L. space than I could ever use.
Even a 77 gr bullet would be out of the neck if I ever loaded it out to the end of that mag.

[CFJunkie]

This is the second time that I claimed that when I provided the last two results that I would close this thread and change the stock on the 12 FV 6.5mm Creedmoor. Well, I still wanted to shoot the 6.5mm Creedmoor and the new Oryx frame that arrived is mounted on the 12 FV .223 because the .223 magazine would accommodate the O.A.L.s that I want to shoot to get the best accuracy and the 6.5mm MDT mag wouldn’t. I had to wait for x-high rings for the .223 because the lowest setting for the Oryx stock cheek weld is 0.5 inches higher than the Savage stock and I couldn’t shoot it comfortably with the scope mounted so low. The x-high rings are now mounted and the action has been moved to the Oryx frame so I intend to shoot the 12 FV .223 with the Oryx stock tomorrow and will start a new thread to document its performance and then compare the results to the factory stock. The AICS mag with enough space for the 6.5mm CM O.A.L. I use hasn’t arrived yet, so this post still has data from the 6.5mm factory stock. When the AICS mag for the 6.5mm CM arrives with sufficient internal space to support the O.A.L. I desire, I’ll consider switching the Oryx frame to the 6.5mm. If the .223 results tomorrow are encouraging, I’ll probably order another Oryx frame. If not, I’ll try it on the 6.5 mm. If it doesn’t show any improvement in accuracy in either rifle, I guess a lightly used Oryx frame will be on the market.
The following are the results with the Savage 12 6.5 mm Creedmoor shot in Northern Virginia on Tuesday morning, July 2^nd at 100 yards. Temperatures on Monday were from 74 to 86 degrees with winds from calm to 3 mph. Altitude of the range is 250 feet above sea level. Temperatures were warm so once I shot the first 10 rounds, I had to let the barrel cool until I could shoot the next set. I usually only got about 7 to 9 rounds down range before the barrel was over the 122-130 reading on the temperature strip I have on my barrel. It took a while to get the three loads finished.
All rounds were shot using Lapua brass and CCI BR-4 primers with an 8x32x56mm NightForce scope with a NP-2DD reticle. All bullets were loaded to achieve a 1.360 msec. exit time which should be the sweet spot for a 26-inch 3% carbon steel barrel with a 0.040-inch recessed crown. The action screws were torqued to 35 in.-lbs. prior to this session.
For this session, I loaded IMR4451 Enduron powder and I planned the seating depths so all the different bullets would achieve the same jump to the rifling – 0.020 – and then adjusted the seating depth by less than 0.005 thousandths to achieve the 1.360 exit time. This morning I shot Sierra TGK 130 grain bullets, Hornady ELD-M 140 grain bullets, and Hornady ELD-X 143 grain bullets.
The load description field shows the powder and charge, the O.A.L., the trim length, and the bullet exit time from the 26-inch barrel.

# Grps	Load Description	Bullet	Weight	Velocity	Average	Median	St Dev	1	2	3	4
4	IMR4451 38.9 gr 2.830 1.906 wf 1.360 * 74/74 deg. F. 35 in.-lbs.	Sierra TGK #4330	130	2702	0.250	0.267	0.076	0.146	0.241	0.293	0.318
3	IMR4451 39.0 gr 2.850 1.908 wf 1.360 * 78/82 deg. F. 35 in-lbs.	Hornady ELD-M #26331	140	2669	0.301	0.283	0.056	0.257	0.283	0.364
4	IMR4451 38.7 gr 2.852 1.911 wf 1.360 * 82/86 deg. F. 35 in.-lbs.	Hornady ELD-X #2635	143	2656	0..288	0.292	0.053	0.220	0.289	0.291	0.349
11					0.278	0.289	0.071

The first group of the 130 grain TGK was incredible - five shots into one ragged hole to start the day after one sighter to foul the barrel. The first three rounds were literally in the same hole and the next two enlarged it a bit to the right. I had great expectations after that but it went back to normal from there on although shooting a 0.278 average for 11 groups with the worst load barely larger than 0.300 is nothing to complain about.
The 143 ELD-X bullets continue to impress and today’s results bettered the initial session average of 0.298. The combined average for the 143 ELD-X with IMR4451 powder is now 0.304. Not bad for a hunting bullet. The 130 TMKs are also not shooting badly and performed best today, although the overall average for IMR4451 powder is 0.345.

[CFJunkie]

Yes, it does. I was able to use that feature with the x-high rings.
But with the original scope rings that fit the 42 mm front optic on the Sightron perfectly and obviously allowed the rifle to shoot pretty well (http://www.savageshooters.com/showthread.php?63914-First-results-with-new-12-FV-223), the adjustable cheek rest was at the bottom adjustment limit and the rings that were perfect for the 12 FV in the Savage factory stock were still too low for the straight (no drop) stock.

If Oryx wanted to provide the 'drop in' feature that they claim, they could have recognized that the 'AR look' they were trying to emulate was created and the shape was forced by its recoil tube that eliminates the possibility of 'drop'. Their choice added another $78 to the Oryx stock cost. IMO, I would have preferred to drop in the action and be able to shoot it without having to change scope rings.

To me the 'look' means nothing. The only thing that matters is that the rifle shoots accurately. All I wanted was a stock that didn't flex. I should have bought a Hogue with the full aluminum frame for 1/2 the price.

I had to get high rings on my Les Baer .223 also for the same reason, only the Les Baer is an AR with a recoil tube.

When I get the longer internal magazine I hope the high rings on the 6.5mm Creedmoor to clear the 56mm front objective on the NightForce provide enough clearance.