Hi everyone, I was wondering if anyone had developed a 260rem for a 1in8 twist, for around the 500-1000 yard range will be used for hunting medium game and killing paper, any advice would be great cheers guys
I'd be interested in this info too. I've just built two 1903 Springfields in 260Rem with tight necks and long throats. Haven't done any load work up yet. My barrels are 1:9 twist and was thinking of using 123Amax and 120 GMX (paper and game respectively).
powders ive had the best luck with in order...
H4831sc...a little slower but extremly accurate and consistent
H4350...running a VERY close second
RL-17...very fast but not quite as accurate or consistent as the above
primers...CCI BR2s have been hands down the most consistent and produce the lowest ESs...im playing with the FED210 Ms in my new build.
brass...lapua
mudpig you say your barrel is throated long with a tight neck?? how long and how tight?
I am still under load development, but here is my summary sheet so far.
Savage Mdl 110C 260 Rem 28" 1-8" Shilen Lapua 139GR Scenar 4PL6018 Powder C.O.L. Start Max Most Accurate Group H4350 37.0 41.1 40.0 .598" IMR4831 37.0 41.0 40.5 .589" GoodToGo Viht N550 33.2 38.0 37.0 .386" Lot # Caliber Case Trim Length: Neck Bushing Headspace DL O.A.L. Ogive Primer Powder Type Charge IMR4831 260 REM Lapua 2.026" .291" 1.623" 2.250" BR2 IMR4831 40.5 H4350 260 REM Lapua 2.026" .291" 1.623" 2.250" BR2 H4350 40.0 Viht N550 260 REM Lapua 2.026" .291" 1.623" 2.250" BR2 Viht N550 37.0 Hornady 140GR AMAX Powder C.O.L. Start Max Most Accurate Group Untested RL-19 2.785" 38.1 45.1 IMR4831 2.785" 36.0 41.0 40.0 .504" H4350 2.785" 39.0 43.0 42.0 .669" Lot # Caliber Case Trim Length: Neck Bushing Headspace DL O.A.L. Ogive Primer Powder Type Charge IMR4831 260 REM Lapua 2.026" .291" 1.623" 2.820" 2.210" BR2 IMR4831 40.0 H4350 260 REM Lapua 2.026" .291" 1.623" 2.820" 2.210" BR2 H4350 42.0 Sierra .264 140gr MatchKing HPBT Powder C.O.L. Start Max Most Accurate Group Untested BL-C(2) 2.765" 34.0 36.6 Untested Viht N550 2.765" 33.2 38.0 GoodToGo IMR4064 2.765" 32.0 37.1 37.0 .361" H4350 2.765" 41.5 44.5 44.0 .700" GoodToGo IMR4831 2.765" 41.0 44.0 42.5 .379" IMR3031 30.0 32.5 31.5 .510" Lot # Caliber Case Trim Length: Neck Bushing Headspace DL O.A.L. Ogive Primer Powder Type Charge IMR4064 260 REM Lapua 2.025" .293" 1.623" 2.750" 2.240" BR2 IMR4064 37.0 H4350 260 REM Lapua 2.025" .291" 1.623" 2.750" 2.243" BR2 H4350 44.0 H4831 260 REM Lapua 2.025" .291" 1.623" 2.750" 2.240" BR2 H4831 42.0 Berger 140GR Match BT Long Range Target Powder C.O.L. Start Max Most Accurate Group Untested RL-19 2.80" 38.0 42.5 Untested H4350 2.80" 37.0 41.1 IMR4831 2.80" 37.0 41.0 39.5 .401" Lot # Caliber Case Trim Length: Neck Bushing Headspace DL O.A.L. Ogive Primer Powder Type Charge IMR4831 260 REM Lapua 2.026" .291" 1.623" 2.265" BR2 IMR4831 39.5
whats your loaded neck size?
ive had the best luck with .003 neck tension and a 2.030 trim length....the 4046 and 4831 groups are very respectable in your spread sheets.
I have had great success with H414, Win760, and Hybrid HV100 with the 107gr through 123gr bullets.
Dean
RUMs are like woman in Stiletto heals, you know they are going to put you in the poor house, but that has never stopped anyone from pursuing them.
Mine is an AI, but the powder I keep coming back to is H4831 SC.
Tried RL17, got the speed but lost some accuracy, H4350 was good but not quite AS good.
Loaded Neck OD = .294"Originally Posted by LongRange
Fired Neck OD= .296"
Neck Bushing usually .291" or .293"
Neck ID = .015"
.264" + 2(.015") - .002 = Theoretical Neck Bushing Size
Last edited by rbp75503; 10-14-2015 at 09:38 AM. Reason: typo
your right in line with your neck tension...the RL-19 was accurate in my rifle but dirty...if you can try some H4831sc and i bet you can get down in the high 2s.
mudpig you say your barrel is throated long with a tight neck?? how long and how tight?[/QUOTE]
Neck is .294 and throat is .120 with a 1.5 degree lead angle. Remington brass necks only need a light cleaning up to fit, but Federal brass needs to really be turned down to fit. The 1903 long action gives me the room to seat long and take advantage of the extra powder space.
Subscribing.. I got a box of 123 Lapua Scenars I'm getting ready to start on this week with some H4350... I'm glad to see that 4064 worked well, I've got a stash of it from my 308...
I've got 8# of W760 and really hoping that is going to be the one that works best for this! Also have IMR4831, IMR4350 to try if necessary.
I use 40.5grs of IMR 4350 with Berger 130gr VLD Target going 2750fps .002 from the lands out of my stock LRP in 260. That load has been working extremely well for me.
Life is tuff.....its even tuffer when your stupid
{John Wayne}
I've been starting loads out with .002 neck compression and loaded neck diameter are .292
Cheers guys thanks for a few ideas :)
I have had my best success for 1K shooting with H4831 140 AMAX, Winchester Brass 243 NK'd up to 260. and H4350 either AMAX or 139 Lapua using Lapua Brass, I'm going to move away from Win Brass and go to Lake City because Winchester Brass loosens up in the primers after a few firings. But it really has produced my most accurate loads with the H4831 and 140 AMAX.
how much 4831??..whats you oal?
Life is tuff.....its even tuffer when your stupid
{John Wayne}
book says min 39g max 46g...Id use H4831sc if your going to try it other wise your going to be compressed before you find a good load and velocity...not that compressed is a bad thing with slower powders it just makes seating a PITA...start about 42-43g and work up to 46g...I bet around 44.5 to 45.8g and .025 off the lands you will find a very accurate load...but if I remember right your running a criterion match barrel? so at .025 off the lands your probably going to start crunching powder at about 44gs.
I'm sure Rangers OAL is about the same as yours unless he sent dummys in to have his barrel chambered to...remember I had a criterion match barrel and it did not have .160 free bore as claimed.
a couple of other VERY accurate powers in a 260....H1000 and RL-25 you will be compressed with those two for sure and RL-19...RL-22 and norma MRP if your looking for a higher velocity as well as accuracy and you will be slightly compressed with those 3....ive found the more air space you can eliminate in the case the more consistent your loads will be.
Last edited by LongRange; 10-24-2015 at 09:33 AM.
I don't have one in a Savage but my Tikka CTR in 260 is 8 twist. Doesn't like anything but 140 grain bullets but no matter whether match or hunting it does great at any range you can shoot. H414 is your friend in the 260. I load every bullet ( Sieera mk. Sierra gk. Nosler bt. Hornady Amax. All with 42 grains of h414. Using BR-2 primers. Oal 2.810. Just my load in my rifle. I tried 3 powders before the h414. 140 smk chrono 2800 fps. Seems to be my sweet spot in speed.
Just curious, did you try H4350 and 4064?
I have both and use them in 308 and 7-08. I have used them in the 260 but the h414 will bring my groups a lot tighter. Just this rifle I suppose.
I recently picked up a Savage Model 11 in 260 Remington with a 1-8 twist I'm puzzled with this rifle it shoots factory 120 gr nosler ballistic tips under a dime at a 100 yards and 100 gr Sierra hollow points under a ½ in with Rl15 but I've tried 129 gr SST and the following powders and can't get a decent group. Rl19,22 IMR 4831,4350. Any suggestions
I'm still playing with my mdl 16, it too shoots factory (Federal) 120 gr Nosler Ballistics better than what I've loaded so far using the same bullet and H4350. The Federal ammo is .063" off the lands and so far everything I've loaded has been .020" off the lands. At 45.0gr of H4350 I had flat primers and extractor marks on the case head. The plan is to find a descent load and fine tune the charge weight and length.
My rifle shoots Hornady 123gr SST pretty good but I had pressure signs at 45.0-45.5gr using H4350. I have 4064, Varget, H380 and picked up a pound of H414 Monday.
I haven't really shot this rifle enough to get comfortable with it, can't seem to get the plastic stock to ride the bags well. Plus I'm used to shooting my 12lb Mdl 12 FVSS in 22-250 and 9lb MKII BTVLSS .22, both have thumb hole stocks and the traditional stock just feels awkward now.
id try some RL-17 in both these rifles.
LongRange, is RL17 temperature sensitive?
Members who have read this thread in the last 1 days: 0
Posting Permissions
Reply With Quote
Bookmarks