Originally Posted by Lefty7mmstw
With these heavywieghts you all really ought to try rl50. 98 grains of it in my 300 rum pitches a 225 hornady hpbt to 2870 fps at mild pressure. 102 grains will do an honest 3000 fps in a 26" 300 rum at normal pressure. Both loads are compressed so a long box will do you good, but they will fit with a bit of work in a stock box.
I was using us869...... 103.5 behind a 210 vld got me 3012 avg with no pressure signs in my gun and room for more powder..... Cant believe how dense that stuff is..... But alas I read about temp stability problems with that powder as well.....and my new barrel didnt like it.......
So I was really hopin to put somethin together w retumbo that would keep me sub moa out to 1000.... Burnt up alot of powder getting to this point. Whoever installed the brake on this barrel did not have it true and that caused me greif for quite a while til I had my gunsmith look at, figure that out, then fix it .
Was just hoping to get somebodys elses opinions on where they would go and what they would do with these groups..
Thanks again for all the replys......