Custom Mauser 22 in. barrel 43.5 RL15, 87 Sierra, 3269 fps, one more grain of powder gave hard bolt lift.
Ruger #1B 26 in barrel 42.5 RL15, 87 Sierra, 3358 fps. One more grain to hot for that rifle.
Ruger Ultralite 20 in. barrel 42.0 RL15 87 Sierra, 3182 fps. Most accurate load in this rifle with that combination.
Ruger Ultralite, 20 in. barrel 45.0 IMR 4007SSC, 85 Nosler, 3109 fps. So so accuracy.
Custom Mauser 22 in. barrel, 46.0 IMR 4007SSC, 85 Nosler, 3223 fps. Poor accuracy.
Still working with the 4007 powder but so far a good accurate load has eluded me.
I started with H-4895 and had no luch=k with good accuracy. I then tried IMR-4831 and all the loads I tried shot well. I settled for 51.0 grs. of IMR 4831 using the 87 Gr. Sieera Vaminter bullet sitting .010 from the lands. I had an average velocity of 3091 FPS. The rifle is a Rouger Hawkeye with a 22" barrel. I had 2 groups with this load, 1 shot .779 and the other .885 for 3 shots!
