What?
That a 6.5x55 shooting a 140gn projectile with ADI 2209 through a 18.5" barrel might only be doing 2200fps, going to a faster powder away than the 2209 burn rate is not ideal for the cartridge.
Versus a 260, which could use a faster powder such as 2206H for the 140gns, so you could go with a shorter barrel and make up for lost velocity with tweaking the loads more.
Seems pretty basic to me.
Last edited by dogmatix; 25-06-2015 at 07:27 PM.
Welcome to Sako club.
It's just not correct
More like 2600 with 2209 dude
2745 with 2209 and 140gr from 20 inch 6.5x55
a bigger case = more speed, always. the difference between a bigger case and a smaller case decreases with a shorter barrel, but bigger pretty much always = faster
2206H sucks shit in a .260, it's never faster than 2209 with a 140 down to like a 4 inch barrel if loaded to the same pressure
Bookmarks