Re: 190 and 210 Berger Loads for a .300 WM
Had some wonderful weather up here today - got up to 50! Summer-like, even.
Set up the crono and found a couple of decent loads for the 190's - the best was 73 grains RL22, WW brass, Fed 215. 5 Shot group was .718", Vel. 3033 fps, SD 12.2, ES 25.3. First 3 were looking really good at .29" and the last two were touching just out of the group.
The 210's with the same load printed 1.858", but the first 3 were .44" and I may have pulled a couple. Vel 2947.6, SD 14.9, ES 39.
Had very similar results with the 190's and 74.5 grains H4831 - Vel. 3041.1, SD 11.5, ES 28.9.
Did not see any of the cracks above the belt today and this was the second firing of that brass. Wondering if there were some defects in some of them. Planning to cut some of those brass from yesterday to see what's going on inside.
Still a new rifle with a total of 53 rounds down the barrel after today's shooting. Should be able to refine the loads a bit and get them to tighten up.