Re: Primer recommendation for .300WM
I've had great success with H1000 and IMR7828. I tend to lean toward H1000.
Often there is very little difference in primer. In may case it was a very small difference. Of course what showa up on target at long range is what really matters.
Alberta Al -- an SD of 9+ for 215's and 13+ for 210's seems like a big difference.
The results I had were close as well, virtually identical, but the edge went to the 215's.
Here's my data with IMR 7828.
200gr smk and 73.3, I7828 @3.495"oal ave velocity
WLRM -es-19, sd-9 .521"@100yds
fed 210- es-19,sd-9 .43"@100ydds
Very close but the 215 were a little better, and it shows on target when shooting past 600yds
Last edited by RockZ; 03-16-2009 at 08:07 AM..