Thread: Help needed for 308 subsonic load

Originally Posted by lmlalong

Its 1:8 twist too fast for 151gr cast? Making the bullet fly apart?the reason why I choose 220gr is purely based on the fast twist. Would not 1:10 1:12 much suitable for 151gr?

It wont get anywhere near enough rpm to fly apart at subsonic speeds.

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Originally Posted by veitnamcam

It wont get anywhere near enough rpm to fly apart at subsonic speeds.

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tru. do you reckon jacked projectile at subsonic speed will expand? if i push 220gr at same speed as 151gr(lets say 1050), i will definitely choose the heavier 220, more energy. but if it wont expand that will be useless.

Originally Posted by lmlalong

tru. do you reckon jacked projectile at subsonic speed will expand? if i push 220gr at same speed as 151gr(lets say 1050), i will definitely choose the heavier 220, more energy. but if it wont expand that will be useless.

There are other guys here far more qualified to comment like @tikka and a few others than I but when I was playing with subs in 308 years ago the only jacketed projectiles that would expand were pistol hornady xtp? 90gr....they definitely expand but my testing on game was very limited to a couple of pigs and a couple of goats all at less than 50y and they definitely expanded and all 4 exited.
Now if doing the same I would be looking at Roberts 150 hollow point or the flash segmented projectile if useing on game was the end goal.

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Originally Posted by veitnamcam

There are other guys here far more qualified to comment like @tikka and a few others than I but when I was playing with subs in 308 years ago the only jacketed projectiles that would expand were pistol hornady xtp? 90gr....they definitely expand but my testing on game was very limited to a couple of pigs and a couple of goats all at less than 50y and they definitely expanded and all 4 exited.
Now if doing the same I would be looking at Roberts 150 hollow point or the flash segmented projectile if useing on game was the end goal.

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hi vietnamcam. what kind of twist rate were you using with the xtp? were you not overly happy with the killing power of them? i was wanting them for a few muttons on the lambing beat and the odd goat/pest while i was hunting. As they are easy to get, not the wait times compared to other options.

Originally Posted by Tom d

hi vietnamcam. what kind of twist rate were you using with the xtp? were you not overly happy with the killing power of them? i was wanting them for a few muttons on the lambing beat and the odd goat/pest while i was hunting. As they are easy to get, not the wait times compared to other options.

Originally Posted by Tom d

hi vietnamcam. what kind of twist rate were you using with the xtp? were you not overly happy with the killing power of them? i was wanting them for a few muttons on the lambing beat and the odd goat/pest while i was hunting. As they are easy to get, not the wait times compared to other options.

They would be ideal for that.IE close range semi controled environment.....there is not a lot of energy there as 90 gr....if you remember it is only twice as grunty as a subsonic 22lr you will be fine.
I was really only useing them as an experiment and for shooting a mates homekill who has since passed away and I changed caliber.
From an 11 twist but being such a short bullet I would think they would be fine out of any factory twist rate offered in 30 caliber.

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Thanks for that. Yeah mite just go for those cast 150 grainers mite give me a bit more versatility just in case.