Re: Proper Twist 300 WM ?
What is your shooting goal? If LR shooting is your goal, it is best accomplished with high BC bullets. High BC bullets require a faster twist. High BC bullets have high BC because of their shape which is long and pointy, which is why they require a tight twist. If you gi to the Berger site, you will see that a 210 Berger requires an 11 twist (minimum) The 208 Amax has a very similar BC as the 210 Berger which means, that at the same weight, they are about the same length and probably require the same twist.. IMO, trying to decide between a 10 and 11 twist or 12 twist is the same as straining at gnats. This is something that BR shooters do and they are usually shooting a different type bullet (flat base often) than LR shooters, and different type of rifels.
If you go with an 11 twist, you will be able to shoot all of the common comercially available bullets but you wont be able to shoot the LR friendly, high BC bullets.
Last edited by MontanaRifleman; 04-06-2010 at 10:11 PM.