Re: 7mm STW & 180 gr Bergers
Murray, in my 7mmSTW, I'm using 76.5gr of RL-22 shooting the 180gr Bergers. Velocity ranges from 3180-3200 depending on temperature out of a 27.5" PacNor barrel. This is a pretty hot load in my gun, so work up to it. I'm also backed off the lands quite a bit as I have a fair amount of freebore in my chamber. Seems most people have the best luck close to, or even jammed in the lands. Guess I got lucky because mine will shoot in the .2's and .3's set up the way I described.
This is the only powder I've tried so far being as I didn't have much time to work up a load before hunting season. I have a buddy thats convinced me to give Retumbo a try, he says I'll get even more velocity with this powder. I'm guessing I have a pretty fast barrel as most people don't seem to be getting the velocity I am with the 180's.
Not to steal this thread, but I'd be interested in hearing from others, as to which is producing more velocity between RL-22 and Retumbo.
Hope this helps.
Last edited by slymule; 12-18-2008 at 04:35 PM.