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Rifles, Reloading, Optics, Equipment
Reloading
Need help with shoulder bumping!
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<blockquote data-quote="TrentK16" data-source="post: 1059959" data-attributes="member: 80865"><p>As the title says I need help with bumping the shoulders back when resizing. Now I've been reloading for a few years now and I wouldn't consider my self a complete rookie to reloading, I also know I am no expert. I've read different manuals, watched plenty of videos so I believe I have a good grasp of reloading for precision rifles.</p><p></p><p>Alright so for my problem. I recently just resized a bunch of 300wm, 7mm rem mag, and 7mm-08. All of them my goal was to bump the shoulder back .002". So I used my hornady headspace gauge and started measuring each one and sorting them into .001" windows. In hope I could get my die dialed in for one, lock it in place and start plugging away at the rest of them that fell into that window. Then adjust accordingly to the brass that fell out of that .001" window. Well I found out fast that didn't work and ended up double and triple cycling every piece to get them just perfect. Now I've always double cycled when seating bullets. Just figured brass with the same measurement to the shoulder I wouldn't need to cycle it through more than once.</p><p></p><p>Background info: </p><p>I'm not using any competition dies, just standard rcbs FL dies. </p><p>The brass for all 3 calibers are from Remington factory rounds that have been fired through the exact same rifles I'm loading them for.</p><p>Using a hornady single stage press. </p><p>Oh and I resizing and depriming in one action, and I never got to lock my die in place cause I'm always adjust the die from case to case.</p><p></p><p>What am I doing wrong? Is it due to inconsistent powder charges from the factory so the shoulder doesn't get blown out equally shot to shot? Should I deprime then measure with headspace gauge and then resize? Or is it do to the dies or press?</p><p>Thanks for any help!</p><p></p><p>Trent</p></blockquote><p></p>
[QUOTE="TrentK16, post: 1059959, member: 80865"] As the title says I need help with bumping the shoulders back when resizing. Now I've been reloading for a few years now and I wouldn't consider my self a complete rookie to reloading, I also know I am no expert. I've read different manuals, watched plenty of videos so I believe I have a good grasp of reloading for precision rifles. Alright so for my problem. I recently just resized a bunch of 300wm, 7mm rem mag, and 7mm-08. All of them my goal was to bump the shoulder back .002". So I used my hornady headspace gauge and started measuring each one and sorting them into .001" windows. In hope I could get my die dialed in for one, lock it in place and start plugging away at the rest of them that fell into that window. Then adjust accordingly to the brass that fell out of that .001" window. Well I found out fast that didn't work and ended up double and triple cycling every piece to get them just perfect. Now I've always double cycled when seating bullets. Just figured brass with the same measurement to the shoulder I wouldn't need to cycle it through more than once. Background info: I'm not using any competition dies, just standard rcbs FL dies. The brass for all 3 calibers are from Remington factory rounds that have been fired through the exact same rifles I'm loading them for. Using a hornady single stage press. Oh and I resizing and depriming in one action, and I never got to lock my die in place cause I'm always adjust the die from case to case. What am I doing wrong? Is it due to inconsistent powder charges from the factory so the shoulder doesn't get blown out equally shot to shot? Should I deprime then measure with headspace gauge and then resize? Or is it do to the dies or press? Thanks for any help! Trent [/QUOTE]
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Need help with shoulder bumping!
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