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Rifles, Reloading, Optics, Equipment
Reloading
How would you read these OCW groups?
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<blockquote data-quote="rammac" data-source="post: 2140157" data-attributes="member: 27761"><p>With OCW you're looking for the powder charges that have the least change in the center of the group, the theory being that the center of the groups will change less with variations in shooting conditions and cartridge components.</p><p>[ATTACH=full]258102[/ATTACH]</p><p></p><p>Assuming that your target was at 100 yards, I ran a quick evaluation of the groups through my OnTarget TDS software. If you look at the group markups you will see a small cross in the center of the group box, that's the center of the group. What you want to find is the groups that have the least difference between where that cross is in relation to your point of aim. So assuming that your point of aim was the center of each dot the least change was between the 41.6 and 41.9 powder charges. I'd recommend working your next loads between those powder charges. I'd also stick with the 2.840" seating depth. It looks to me like you should get your best 100 yard groups using around 41.6 grains of powder and a seating depth of 2.840". If that proves to be true then I'd test at longer ranges and see if the group sizes and center points perform as expected.</p></blockquote><p></p>
[QUOTE="rammac, post: 2140157, member: 27761"] With OCW you're looking for the powder charges that have the least change in the center of the group, the theory being that the center of the groups will change less with variations in shooting conditions and cartridge components. [ATTACH type="full" alt="1614989075787.png"]258102[/ATTACH] Assuming that your target was at 100 yards, I ran a quick evaluation of the groups through my OnTarget TDS software. If you look at the group markups you will see a small cross in the center of the group box, that's the center of the group. What you want to find is the groups that have the least difference between where that cross is in relation to your point of aim. So assuming that your point of aim was the center of each dot the least change was between the 41.6 and 41.9 powder charges. I'd recommend working your next loads between those powder charges. I'd also stick with the 2.840" seating depth. It looks to me like you should get your best 100 yard groups using around 41.6 grains of powder and a seating depth of 2.840". If that proves to be true then I'd test at longer ranges and see if the group sizes and center points perform as expected. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How would you read these OCW groups?
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