6BR vs 22 BR same weight bullet

[JeffG]

I just dove into the 22 BR (9twist) world. I have had great success with the 6BR (8twist and 14twist). These are/I am never gonna be dedicated bench rest shooters..I just like tiny groups!

Just for my own curiosity; since the fast twist 22 should like 62-70g, and the slow twist 6mm likes the same range of bullet weights..who's gonna win the velocity race with equal weight bullets?...22 slug will have a higher BC, 6mm will have more surface for the powder charge to push against (= higher case pressure?)

Am I just creating another gun to do the same thing as one of my sixes?

 

[Catfish]

With the same size case and same weight bullet the larger will always have more velocity, but the higher BC of the smaller dia. bullet will do better in the wind and at long ranges, all other things being equal.