6mm bullet choice

[reallybigtoad]

Hi All,

6mm 1-11" twist rate. What is the heaviest bullet it will stabilize?

thanks,
-todd

[ar15barrels]

Probably about 85-100gr.
Depends on how large a cartridge you have pushing it and how fast you can drive it.

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

[reallybigtoad]

Thanks for the link Randy.

It's a 40X in 6mm Remington

-todd

[buffybuster]

It's not the weight of the bullet but rather the length. If the bullet is comprised of lead core with a Cu alloy jacket then probably 85-95grs, (maybe 100grs if you can push it fast enough).

If you are using a monolithic bullet (all copper alloy) the Cu is not as dense as Lead so a bullet equal weight will be longer. In this case the maximum bullet weight would probably be 75-85grs.

You also have to take into account some twist variance. With OEM barrels, a 1:11 twist might actually be anything between: 1:10.5-11.5 twist. Custom barrels are much better, but button rifled barrels will vary slightly more than cut rifled barrels.