Twist Rate once again

Some barrel makers have recommended twist rates on their websites... if using a 'long' bullet choose the quicker twist. Slightly quicker is always better than too slow.

From Shilen:
.308
- 8" for bullets heavier than 220 gr.
- 10" for bullets up to 220 gr.
- 12" for bullets up to 170 gr.
- 13" * Ratchet rifled 4 groove
- 14" * for bullets up to 168gr.
- 15" * for bullets up to 150 gr.
- 17" * for bullets up to 125 gr.
 
So is 1 in 10 bad for a typical .308 shooter?

In theory you are twisting the bullet faster than it needs and it may be slightly less accurate than if the correct twist was used. In all probability your rifle is not accurate enough to see a difference. Serious Benchrest shooters in Benchrest calibers may.
 
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