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Rifles, Reloading, Optics, Equipment
Reloading
Primer pocket truing
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<blockquote data-quote="Alex Wheeler" data-source="post: 2651677" data-attributes="member: 101859"><p>The K&M tool is the one you want if your seating to depth and do not want to sort. My testing showed the primer wants to be seated to a certain amount of crush based off its original height. So if your primer lot varies by .004 and you just seat them all to a depth, you will have .004 variation in crush. So either you need to measure every one and sort into batches and adjust each batch to maintain crush or you use a tool like the K&M. Both are extremely tedious. The interesting thing is that after testing a primer for the crush it shot best and comparing that to where they end up if you seat by feel, they end up in the same place. While we could hold a slightly better tolerance using a tool that seats by depth, we could not see it on target. And there was a lot of work to make it work. My point on this subject has always been that you can literally shoot sub 2" groups at 1k seating by feel, you can break year long aggregate group records seating by feel. This is not holding back your hunting rifle. I think its a road that extremely accomplished shooters need to explore because at some point everything matters. But when it comes to this topic, its so small we cant see it. Maybe once we can shoot under an inch we can who knows. Lots of good tools out there but you have to understand what a primer wants and know how the tools work.</p><p> A very big part of my business is guiding my customers to their accuracy goals. I dont charge for it, its part of the support after I build the rifle. You want them to shoot, loading and tuning is a huge part of that. To this day I have yet to find a customer whos method of primer seating has held them back from their accuracy goals. From hunting rifles to record breaking competition rifles.</p><p> I am not saying any of these tools are bad, I have used all of them in this thread I believe. And they are all very good at what they do. I think some are faster, some are more ergonomic, some are better made, ext.</p></blockquote><p></p>
[QUOTE="Alex Wheeler, post: 2651677, member: 101859"] The K&M tool is the one you want if your seating to depth and do not want to sort. My testing showed the primer wants to be seated to a certain amount of crush based off its original height. So if your primer lot varies by .004 and you just seat them all to a depth, you will have .004 variation in crush. So either you need to measure every one and sort into batches and adjust each batch to maintain crush or you use a tool like the K&M. Both are extremely tedious. The interesting thing is that after testing a primer for the crush it shot best and comparing that to where they end up if you seat by feel, they end up in the same place. While we could hold a slightly better tolerance using a tool that seats by depth, we could not see it on target. And there was a lot of work to make it work. My point on this subject has always been that you can literally shoot sub 2" groups at 1k seating by feel, you can break year long aggregate group records seating by feel. This is not holding back your hunting rifle. I think its a road that extremely accomplished shooters need to explore because at some point everything matters. But when it comes to this topic, its so small we cant see it. Maybe once we can shoot under an inch we can who knows. Lots of good tools out there but you have to understand what a primer wants and know how the tools work. A very big part of my business is guiding my customers to their accuracy goals. I dont charge for it, its part of the support after I build the rifle. You want them to shoot, loading and tuning is a huge part of that. To this day I have yet to find a customer whos method of primer seating has held them back from their accuracy goals. From hunting rifles to record breaking competition rifles. I am not saying any of these tools are bad, I have used all of them in this thread I believe. And they are all very good at what they do. I think some are faster, some are more ergonomic, some are better made, ext. [/QUOTE]
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