I was wondering if anybody had load data for a .300win mag with H1000 and Retumbo with a 230berger hybrid,215 hybrid,210 VLD, 208 a max and the 225 bthp. I really just need accurate velocity with H1000 or Retumbo.
I am at 79 gr of H1000, Fed Gm 215 M, Nosler Brass. Runs a 215 Berger at 3000 fps with extreme accuracy. I started at 73 gr and worked up. All loads were set up at 30 thou off the lands. All 7 powder charges produced one ragged hole groups at 100 yds. I have never had a rifle be so easy to develop a load for. The Nosler brass seems to be lighter than others so I believe that is why I made it to 79 gr. Also the reamer I used has a extra 50 thou of free bore. This allows me to seat the bullet long with a Wyatt extended box. Barrel is a 26" Brux.