bullet weight and twist rate

[JoeH]

I'm going to buy a heavy barrel 308 Winchester. My primary use, initially, will be for recreational shooting at the gun club. I may want to try F-class (out to 600 yd) at some point down the road. I may also use this rifle for deer or coyotes but chances are slim.

So, I'm researching rifles and finding several twist rates. Rifles in which I'm interested have the following twists: 1:10, 1:11.25, and 1:12.

What bullet weights will I want to be using and which twist rates are best for those weights?

Thanks!

[JFettig]

I haven't really seen any reasons to get a slower twist rate. My FN has a 1:12 twist rate and I've shot projectiles from 150gr to 190gr.
A faster twist is better for bigger projectiles. I turned some projectiles that should be nice long range projectiles but I don't have fast enough twist in my rifle.

Does anyone have any reason not to go with with a faster twist?

My whisper has 1:8 twist and I've shot small projectiles with no ill effects.


Jon

[Rip Van Winkle]

In 30 cal I think the old stand by was 1-12, although I think the M1 and M14 are 1-10. Some of the Palma guys I know are running 1-14 to 1-15, but their shooting 155gr bullets @ around 2900+ fps exclusively.

Unless you're planning on shooting some of the lighter thinner skinned bullets, say in the 125gr class, I'd go with a 1-10.

[ChefBo]

Bullet rate and twist rate, 1:10 1:11/25 1:12
Ive always understood:
The lower the twist rate , The heavier the bullet.

If this is not correct, please advise which would be .

Thank you

[Sigfan220]

I usualy refer to the Shilen site. My 243 has a Shilen crome-moly barrel in 1:10 twist. I didn't have much of a choice in the twist rate, it was a pre threaded short chambered barrel from either Midway or Brownells.

http://www.shilen.com/calibersAndTwists.html

[Rip Van Winkle]

The heavier the bullet in any given caliber the longer it will be and it will need a faster twist barrel to stabilize it.

There is a formula to figure out the proper twist for a given bullet but alas, I don't have it.

[TC95GT]

http://www.snipercountry.com/hottips/TwistRate.htm