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Rifles, Reloading, Optics, Equipment
Reloading
Showing signs of excess pressure/what next?
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<blockquote data-quote="Michael Eichele" data-source="post: 249666" data-attributes="member: 1007"><p>It can be several things. One possibility is your brass. As the necks get fired and resized the brass becomes work hardened. When this happens, you can get very inconcistent pressures AND velocities. When doing development you NEED a chrony and you NEED to fire EVERY round over a chrony so you KNOW what is going on. You may need new brass or to anneal your necks.</p><p></p><p>Have you changed to a new lot of powder?</p><p></p><p>Have you changed to a new lot of bullets?</p><p></p><p>Have you changed to a new lot of primers?</p><p></p><p>You stated that all components were the same but are they from the same lot?</p><p></p><p>Are your cases matched by weight or volume? Some will argue that it doesnt matter but I personally have found that volume matters. Heavier/thicker brass will increase pressure over brass that is thinner due to less case volume. Have you matched your cases?</p><p></p><p>Also, how old is your barrel?</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 249666, member: 1007"] It can be several things. One possibility is your brass. As the necks get fired and resized the brass becomes work hardened. When this happens, you can get very inconcistent pressures AND velocities. When doing development you NEED a chrony and you NEED to fire EVERY round over a chrony so you KNOW what is going on. You may need new brass or to anneal your necks. Have you changed to a new lot of powder? Have you changed to a new lot of bullets? Have you changed to a new lot of primers? You stated that all components were the same but are they from the same lot? Are your cases matched by weight or volume? Some will argue that it doesnt matter but I personally have found that volume matters. Heavier/thicker brass will increase pressure over brass that is thinner due to less case volume. Have you matched your cases? Also, how old is your barrel? [/QUOTE]
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Reloading
Showing signs of excess pressure/what next?
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