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Rifles, Reloading, Optics, Equipment
Reloading
How would you read these OCW groups?
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<blockquote data-quote="the444shooter" data-source="post: 2140055" data-attributes="member: 46"><p>I've ran tests at multiple charge weights, multiple seating depths, nothing really getting me where I need to be. An earlier test at 41.9gr for seating depth had me at 2.840 showing the most promise. I saw/read that seating depth changes should be done in .003" increments, so I did 2.837 for the groups shown above. I can't tell which variable to change at any given time. But I guess I'll try to tweak the seating depth</p><p></p><p>I chose 41.9gr in the test because the velocities were the most consistent. **Although, upon further research, I learned that consistent velocities don't mean diddly squat, and I might've wasted all the effort due to faulty reasoning**</p><p> See these groups below from my seating depth test at 41.9gr</p><p>41.9gr H4350 Seating Depths varying by .010 (before I read that it should be done at .003 increments)</p><p>Going clockwise, starting from bottom left, 2.820, 2.830, 2.840, 2.850, and then I tried 2.898 and 2.895 because I was jammed at just over 2.900 and I had learned about the .003 increments. As you can see, 2.840 showed potential. What I don't understand is why seating depth caused so much change in vertical spread, with the same powder charge. Or maybe it's shooter-induced?</p><p>Also, looking at the groups going from 2.830, 2.840, then 2.850 does that give any indication of which direction I should start adjusting the seating depth? [ATTACH=full]258076[/ATTACH]</p></blockquote><p></p>
[QUOTE="the444shooter, post: 2140055, member: 46"] I've ran tests at multiple charge weights, multiple seating depths, nothing really getting me where I need to be. An earlier test at 41.9gr for seating depth had me at 2.840 showing the most promise. I saw/read that seating depth changes should be done in .003" increments, so I did 2.837 for the groups shown above. I can’t tell which variable to change at any given time. But I guess I’ll try to tweak the seating depth I chose 41.9gr in the test because the velocities were the most consistent. **Although, upon further research, I learned that consistent velocities don't mean diddly squat, and I might've wasted all the effort due to faulty reasoning** See these groups below from my seating depth test at 41.9gr 41.9gr H4350 Seating Depths varying by .010 (before I read that it should be done at .003 increments) Going clockwise, starting from bottom left, 2.820, 2.830, 2.840, 2.850, and then I tried 2.898 and 2.895 because I was jammed at just over 2.900 and I had learned about the .003 increments. As you can see, 2.840 showed potential. What I don't understand is why seating depth caused so much change in vertical spread, with the same powder charge. Or maybe it's shooter-induced? Also, looking at the groups going from 2.830, 2.840, then 2.850 does that give any indication of which direction I should start adjusting the seating depth? [ATTACH type="full" alt="C75DB2CE-6C39-4253-9721-4E49CDDBAD15.jpeg"]258076[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How would you read these OCW groups?
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