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Rifles, Reloading, Optics, Equipment
Reloading
300WM load development issues
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<blockquote data-quote="ta406" data-source="post: 1331372" data-attributes="member: 34644"><p>I haven't done any seating testing yet. I have a Wyatts extended mag box so I can load to the lands. I did find that 77 and 77.5 grains of H1000 during barrel break in produced some decent groups with no signs of pressure at 2960 FPS. I think I'll reverse course and start there with your suggested seating test method. I don't have my notes handy but I believe both of those loads produced a SD of around 10 and ES of 20. And as a matter of fact, I was at .015 off the lands. The H1000 group size was half of the 570 groups. My whole reason for trying 570 was to ring out a few more FPS but with fall around the corner, I think I'll put that powder on the shelf and revisit it this winter.</p><p></p><p>Thanks to all for the great advice</p></blockquote><p></p>
[QUOTE="ta406, post: 1331372, member: 34644"] I haven't done any seating testing yet. I have a Wyatts extended mag box so I can load to the lands. I did find that 77 and 77.5 grains of H1000 during barrel break in produced some decent groups with no signs of pressure at 2960 FPS. I think I'll reverse course and start there with your suggested seating test method. I don't have my notes handy but I believe both of those loads produced a SD of around 10 and ES of 20. And as a matter of fact, I was at .015 off the lands. The H1000 group size was half of the 570 groups. My whole reason for trying 570 was to ring out a few more FPS but with fall around the corner, I think I'll put that powder on the shelf and revisit it this winter. Thanks to all for the great advice [/QUOTE]
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Reloading
300WM load development issues
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