200 g Barnes

[BIGBOY1975]

Loaded up string of 200g barnes ,varget powder,cci primers,win brass col 2.960 backed off max by 10% loaded 3 each by upping 1% to max shot i of each load they shot terrible 8 to 10 inches low some 7 to 8 inches to the right had 10 loads last two loadings too hot backed off. Shot 180g same procedure everything fine. 308 rem 700 20" factory barrel. Any suggestions

 

[rusty815]

Re: 200 g Barnes

It could be many factors, how far off from the lands are you seating the bullet? From my experience the 200gr. round requires a bigger jump than the other TSX/TTSX rounds. Also, what twist rate does your barrel have? It is more likely that you do not have a fast enough twist, the 200gr. TSX/TTSX requires a 1/10, I think you might have a 1/11-11.25 twist. IMO the 308 is not well suited for the round, there is just not enough power, and the long bearing surface also slows it down further. If you are planing on using it for hunting, I would use a much lighter one, 168gr. would be the heaviest I would use in a 308, the TSX rounds need a good amount of velocity to be effective.

 

[BIGBOY1975]

Re: 200 g Barnes

Not sure on the twist, factory varmint, im 20 thousandths off the lands.Thanks for the info.

 

[BIGBOY1975]

Re: 200 g Barnes

I loaded some 200's with imr 4320 im gonna shoot them today and see how that goes.

 

[BIGBOY1975]

Re: 200 g Barnes

No luck with the 4320 worst than the varget guess ill stick with the 180's

 

[rusty815]

Re: 200 g Barnes

Since you're using the factory Varmint barrel, I believe that it is a 1/11.25 twist, which is too slow for the 200gr. stick with the 180gr. TSX since you can stabilize them, or take a look at the TTSX and LRX rounds.

I also suggest you try the lighter TSX for better expansion.

 

[BIGBOY1975]

Re: 200 g Barnes

Thanks for the info.