rate of twist m70 winchester

[citori]

Is the rate of twist in my Winchester pre '64 model 70 featherweight 30.06 1:10? If so what weight bullet would afford me the best accuracy?

Thanks,
Terry

[Iowegan]

The book shows a 1:10 twist rate for your Winchester. It will work best with 165-180 grain bullets. However, bullets up to 220 grains may stabilize, depending on velocity and bullet design.  The heavy bullets may loose stability down range but should still be stable out to  hunting distances of 200 yards.

If you plan to shoot long range stuff, I'd stay in the 165-180 grain range.

[Coal River Rat]

1/10 is a pretty common twist for 06s, 308s and other 30 caliber rifles. My 308 dotes on 150gr Sierra P-Hs and my buddy's 30-06 will shoot 1/2MOA consistantly with 150gr. Ballistic tips, both are 1/10 twist barrels. I guess what I'm getting to is just pick your flavor and work up a good load. 1/10 will work nicely with 150-200+ grain bullets.  Good Shooting!

[Zachary]

I have a Remington 700 and it's rate of twist for the 30-06 is also 10:1.

The only thing that I will add is that, in today's market, bullet design seems to go hand-in-hand with bullet weight.

For example, your typical older-style 180 grain jacked soft-point bullet is not going to be nearly as long as the new-style 180 grain Barnes Triple Shock.  Alot of these new "NASA Engineered" bullets are significantly longer for their weight, so you should take this into consideration.

Granted, this might not make a difference up to 180 grains or so in a .30-06 as it would if it were a 200 or a 220 grain bullet, but then again it might.  

Also keep in mind that we are not talking about accuracy here, but rather just bullet stability.

[citori]

Thanks for the help. I just found this forum and plan on hanging around for a while.

Terry