I'm running 215 Hybrids in my 300wsm. I was pleasantly surprised at the velocities and accuracy I'm getting with RL17. Loaded to fit in a Wyatt extended magazine box with 62 grains RL17 and a 215M primer in Norma brass, I'm running 2940fps without excess pressure. 63 grains is OK too but primer pockets loosen up after 3 firings. I'm also getting about 1/3 MOA out of both loads, as well as a mild load of 60 grains that produces 2840fps.
So running the numbers vs the 7mm's with the 180's at 3000, this load would slightly outperform it for drift and provide a lot better barrel life. I just thought I would share for those messing with the 300WSM and the heavies. I didn't think I'd see performance like this out of it. I know RL17 has a reputation for temp sensitivity, but we get very little temp variations here, except getting much colder than it is now.
So running the numbers vs the 7mm's with the 180's at 3000, this load would slightly outperform it for drift and provide a lot better barrel life. I just thought I would share for those messing with the 300WSM and the heavies. I didn't think I'd see performance like this out of it. I know RL17 has a reputation for temp sensitivity, but we get very little temp variations here, except getting much colder than it is now.
