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Rifles, Reloading, Optics, Equipment
Reloading
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<blockquote data-quote="Bullet bumper" data-source="post: 744641" data-attributes="member: 17844"><p>It's called age hardening of the brass cause by stress corrosion . Now that does not mean you see a heap of corrosion in the traditional sense . </p><p>the neck shrinks tighter on the bullet and neck welding can take place where the bullet bonds to some degree to the case neck . </p><p>I did a 10 year test on this and it is worse for reloads that may already be a bit hard and worse if cases are subjected to ammonia products. </p><p>Worse for uncoated bullets and high neck tensions to start with. </p><p>Here is a couple of photos one showing the neck shrinkage after 10 years loaded and teh other showing where a part ofa projectile was bonding with the cartridge brass . Moly coated bullets had the lowest grip and were laest affected.</p><p>Some of the uncoated bullets had very high neck tensions and took much greater leverage to pull the bullets and some that I fired with a face shield on produced higher recoil and flatter primers than new reloads with the same loads.</p></blockquote><p></p>
[QUOTE="Bullet bumper, post: 744641, member: 17844"] It's called age hardening of the brass cause by stress corrosion . Now that does not mean you see a heap of corrosion in the traditional sense . the neck shrinks tighter on the bullet and neck welding can take place where the bullet bonds to some degree to the case neck . I did a 10 year test on this and it is worse for reloads that may already be a bit hard and worse if cases are subjected to ammonia products. Worse for uncoated bullets and high neck tensions to start with. Here is a couple of photos one showing the neck shrinkage after 10 years loaded and teh other showing where a part ofa projectile was bonding with the cartridge brass . Moly coated bullets had the lowest grip and were laest affected. Some of the uncoated bullets had very high neck tensions and took much greater leverage to pull the bullets and some that I fired with a face shield on produced higher recoil and flatter primers than new reloads with the same loads. [/QUOTE]
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Reloading
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