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243 twist rate

14 Aug 2012
@ 07:45 pm (GMT)

jason brown

im thinking of a long range rabbit/varmint rifle. the 243 has caught my eye.
i like the look of the 105gr amax, however my reloading manual says 1-9 twist or faster.

so my question is... if i have a 1-9 or 1-8 twist to stabilize the 105gr, does that mean it wont shoot the lightest projectiles well?
can i have the best of both worlds...

Replies

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15 Aug 2012
@ 06:48 am (GMT)

Jim Moseley

Re: 243 twist rate
There are times when you can spin a light weight bullet so fast that it will come apart. I think if you keep the speed down to a reasonable pace it should shoot just fine, but keep in mind that bullets have an optimal twist rate for their weight.
15 Aug 2012
@ 01:01 pm (GMT)

Nathan Foster

Re: 243 twist rate
Its a bit of a tough one, 1:9 would be as fast as I would go, I never like going too fast. Yes you may have trouble with light bullets, more so the 75 grain bullets. You might get away with the 85-87 grain bullets which are about as light as I would go anyway. As Jim has said, backing off loads a bit can help stability.
15 Aug 2012
@ 09:56 pm (GMT)

jason brown

Re: 243 twist rate
ok, i see now the theory. thanks for the replys.
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