Am i the only person

[karlrudin]

Just a thought, just went through the ordeal of finding the right twist on a new barrel. so this is fresh in my mind. The theory is the lighter the bullet the slower the twist. The heavier the bullet the faster the twist. A standard 308 comes w/a 1-10 twist. Heavy bullets require a 1-9 twist. So a 1-12 should be somewhere near the bottom of the light bullets. My 110fp in 308 loved 110gr semi jacketed hollow points. A 1-12 should really do well. My 2c

[stangfish]

Just a thought, just went through the ordeal of finding the right twist on a new barrel. so this is fresh in my mind. The theory is the lighter the bullet the slower the twist. The heavier the bullet the faster the twist. A standard 308 comes w/a 1-10 twist. Heavy bullets require a 1-9 twist. So a 1-12 should be somewhere near the bottom of the light bullets. My 110fp in 308 loved 110gr semi jacketed hollow points. A 1-12 should really do well. My 2c

Yes ^

Also consider loading those short bullets at the sierra Load book OAL. Like 2.750 or something rather than the 2.870 or whatever you are trying.

[earl39]

A 1-10 twist will stabilize any bullet the 308 can safely push. The 1-12 will work for most bullets up to 190 gr and in some rifles may work for heavier bullets.

[rjtfroggy]

Sorry I have not been keeping up with the threads but it has been a tough 2 weeks here. A death in my immediate family, guest from Florida staying through the funeral and now trying to get our house somewhat back to normal. Still alot of paper work and phone calls to make but that is just time consuming and can be done when we feel like doing some.
I did finally do some brass prep and have 50 rounds ready to load also got the OAL meassured with the Sinclair tool so now I need to decide whether to continue with this barrel or just go with a different set up completely, kind of tired of throwing $$$ at this with no return satisfaction.
Thanks for all the ideas and I will keep everyone posted.

[skypilot]

RJ, my condolences 1st and foremost.

You got me to thinking, and I checked my .243 with the sinclair and it generally was similiar to your issues and measurements with your .308. I load developed Thurs. with an COAL of 2.858" to lands. Reload manual SAAMI says 2.710 COAL."

I loaded to 2.838" COAL(.020" off lands) and what a difference it made at 160 yds(furtherest I could shoot due to cattle). I had been having issues with this sporter, similar to your frustration with the .308.

In my case at least, I believe bedding the action, bedding just past the barrel nut and loading longer than SAAMI has gotten mine on path to being a shooter.

[rjtfroggy]

Skypilot thank you.
My measurements came out to an average 3.088 with the Sinclair so I will start at 3.048 going off Freds advice of .040 jump.May also try a few at 2.775 Sierra's COAL just to satisfy my own curiosity. I am only going to load 5 of each to see what happens, if no luck then either a different barrel or a different caliber altogether.
As for the 12 twist to answer others that is what is used for the 150-155 grn. bullets for palma shooting also the 13 twist just depends on manufactor. I shoot the 150's out of my Mod. 10LE 10 twist and it stays well under moa @ 100 and right at 1" @200.

[jonbearman]

The tiger shark looks cool but is useless in the accuracy game.You can get one from kevin rayhill at stockade stocks or sss has a nice design and joel russo if you love wood.

[frank1947]

if it started as a 30 br do you know for sure the twist rate? most 30br are 17 and 18 so anything above a 125 gr bullet wouldnt be so good specially if running hot, if you are not sure of twist , put your cleaning rod in with a brush or patch whatever will make rod spin , mark rod at top and start the rod in count how many rotations it makes till the tip hits the end of barrel so if you have 24 inch barrel and it rotates 3 times then 24 divided by 3= 8 that would be 1/8 twist, it really helps to know twist rate.

[rjtfroggy]

Jonbearman-I shot my best score at a match using this stock with a 223 @100 yards this year and in this stock this same 223 is .2-.3 everytime out, so that is why I personaly doubt it is a stock issue.

Frank1947 this is not an off the shelf barrel it was custom ordered as a 30br then when after numerous times trying to get it to group it was rechambered to 308, unfortunately with the same results.

It is all a moot point now because a new barrel is enroute to me as I type.
I will be calling the barrel maker later today just to hear thier opinion.

[acemisser]

****,I hope you get the mystery solved...I think it is the twist..Just because it was rechambered means nothing
the twist will be the same as befor..But you know that..I for one am excited to hear about it after it's all said and
done...And sorry for your loose....God be with you and your family..John

[tomme boy]

Stop cleaning the barrel! The most you should do is run a dry patch down it. I have seen a few rifles that would not group until they had 50-75 rounds down the barrel.

[lal357]

nice to see another tiger shark stock in use mine was a 308 origonaly and is now a 223 f class gun my son shoots (if i'm nice he will let me shoot it after all it is mine) . the only problem i have had with the stock is it doesnt like sitting in a rear rest well i finally found a rest at bass proshop that works well and it will consistantly put 5 shots into 3/4 @ 300 now .i use to think it was the barrel when it was a 308 but realized that it wasnt steady in the rear and as a result it would not group that well the problem was the cut out in the rear side of the stock would let it wiggle i tried different bags and the one that worked for me was thier 20.00 leather unfilled filled till it just about burst with sand.

[lal357]

as for cleaning the barrel each barrel is different my 223 CBI barrel can go 300 rnds before groups open up while my shilen i clean every 200 you will just have to shoot it until you see the groups opening up and then clean you will find a pattern.