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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Increase in velocity with stored ammo question?
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<blockquote data-quote="Greyfox" data-source="post: 1997122" data-attributes="member: 10291"><p>You didn't mention the powder you are using. While fusing of the bullet to the neck can cause a spike in pressure with bare metal to metal contact, another cause can be "bridging", caused by the powder sticking/clumping in the loaded case. Retumbo is famous for this and I make it a point to bring freshly loaded ammo in my shooting excursions and hunting trips. These are loaded 2-4 weeks in advance if use. What happens is, upon ignition, the fused mass of powder being pushed into the neck/chamber causes an increase in pressure. A good way to check for this is to pull the bullet on one of the loaded rounds that is showing the pressure increase. If all the powder flows easily out of the case, this is probably not the issue. If it needs to be picked, or tapped out, this may be the cause.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 1997122, member: 10291"] You didn’t mention the powder you are using. While fusing of the bullet to the neck can cause a spike in pressure with bare metal to metal contact, another cause can be “bridging”, caused by the powder sticking/clumping in the loaded case. Retumbo is famous for this and I make it a point to bring freshly loaded ammo in my shooting excursions and hunting trips. These are loaded 2-4 weeks in advance if use. What happens is, upon ignition, the fused mass of powder being pushed into the neck/chamber causes an increase in pressure. A good way to check for this is to pull the bullet on one of the loaded rounds that is showing the pressure increase. If all the powder flows easily out of the case, this is probably not the issue. If it needs to be picked, or tapped out, this may be the cause. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Increase in velocity with stored ammo question?
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