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Rifles, Reloading, Optics, Equipment
Reloading
Does new brass shoot differently than fire-formed brass?
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<blockquote data-quote="dok7mm" data-source="post: 2073424" data-attributes="member: 90080"><p>Because new brass is formed to fit most all rifles, it could have quite a bit forming in your particular chamber, therefore the combination uses part of the pressure to form the brass to your chamber. It often requires 1 or 2 firings to give consistent velocities when doing load development.</p><p></p><p>One caution, don't start bumping shoulders back until brass is at max headspace. You can back your FL die out a bit, sizing the neck without bumping.</p><p>Then see if the partially sized case will chamber. If it does, it's needs more forming.</p><p>If it won't chamber easily, then bump shoulder back a bit at a time, until it chambers easily. If you have a reamer print, it makes it easier to find the proper headspace.</p><p></p><p>If you've fired brass twice, find a few pieces that show the longest headspace ( usually from the higher velocities). You can then set up your FL die for .002" or so shoulder bump.</p></blockquote><p></p>
[QUOTE="dok7mm, post: 2073424, member: 90080"] Because new brass is formed to fit most all rifles, it could have quite a bit forming in your particular chamber, therefore the combination uses part of the pressure to form the brass to your chamber. It often requires 1 or 2 firings to give consistent velocities when doing load development. One caution, don't start bumping shoulders back until brass is at max headspace. You can back your FL die out a bit, sizing the neck without bumping. Then see if the partially sized case will chamber. If it does, it's needs more forming. If it won't chamber easily, then bump shoulder back a bit at a time, until it chambers easily. If you have a reamer print, it makes it easier to find the proper headspace. If you've fired brass twice, find a few pieces that show the longest headspace ( usually from the higher velocities). You can then set up your FL die for .002" or so shoulder bump. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Does new brass shoot differently than fire-formed brass?
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