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Rifles, Reloading, Optics, Equipment
Reloading
Bullet cold weld to brass, real or myth?
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<blockquote data-quote="LoneTraveler" data-source="post: 1850228" data-attributes="member: 77249"><p>Setting the seating die down a few thousands and seating the bullet deeper has been around a long time in military competition. Military ammo being sealed with a lacquer like compound at the primer and bullet case mouth, Even match ammo. Snipers are issued match ammo in combat zones. </p><p>In the winter 1964-65 I was captain of the Ft Dix small bore team. They was preparing for the service rifle matches to start. They was in the armors area preparing ammo. They seated all the bullets a few thousands deeper to break the sealer bond. They even pulled the bullets from some of the cases and dumped the powder and resized the case neck and weighed the powder, Refilled the case and seated the bullet. Some boxes of ammo had the rifle Serial No. wrote on the boxes and in neat stacks.</p><p>Their thought was if you can gain 1 point or V for each shooter on a 4 man team means the difference between 1st place and a 3 way tie for 4th place in a match. </p><p></p><p>The Police Armors class I went to had a section they taught on ammo. Many factory ammos and military ammo does not use a tight neck tension on the case, But use a crimp to hold the bullet tight in the case. Real tight neck tension will cause necks to split or break off and can cause jamming of Semi/Full auto firearms.</p><p></p><p>There would be no mechanical weld of the bullet to the case, But put a bullet and case in contact with each other and add sweat, powder residue, rain or snow a chemical reaction could be a Galvanic reaction to bind them to each other. </p><p></p><p>When I worked as a wildlife officer on the eastern USA divide we periodically checked the PH of rain and snow, I have seen readings of 2.8 on a scale where 7.0 was neutral. </p><p></p><p>If ammo was stored in a hardware store with fertilizers, lime, sprays, and cleaning solvents vapor hard to tell what could or would happen to the ammo. Chrome tanned leather in a ammo belt or case can turn the green booger loose on ammo too, And cause problems.</p></blockquote><p></p>
[QUOTE="LoneTraveler, post: 1850228, member: 77249"] Setting the seating die down a few thousands and seating the bullet deeper has been around a long time in military competition. Military ammo being sealed with a lacquer like compound at the primer and bullet case mouth, Even match ammo. Snipers are issued match ammo in combat zones. In the winter 1964-65 I was captain of the Ft Dix small bore team. They was preparing for the service rifle matches to start. They was in the armors area preparing ammo. They seated all the bullets a few thousands deeper to break the sealer bond. They even pulled the bullets from some of the cases and dumped the powder and resized the case neck and weighed the powder, Refilled the case and seated the bullet. Some boxes of ammo had the rifle Serial No. wrote on the boxes and in neat stacks. Their thought was if you can gain 1 point or V for each shooter on a 4 man team means the difference between 1st place and a 3 way tie for 4th place in a match. The Police Armors class I went to had a section they taught on ammo. Many factory ammos and military ammo does not use a tight neck tension on the case, But use a crimp to hold the bullet tight in the case. Real tight neck tension will cause necks to split or break off and can cause jamming of Semi/Full auto firearms. There would be no mechanical weld of the bullet to the case, But put a bullet and case in contact with each other and add sweat, powder residue, rain or snow a chemical reaction could be a Galvanic reaction to bind them to each other. When I worked as a wildlife officer on the eastern USA divide we periodically checked the PH of rain and snow, I have seen readings of 2.8 on a scale where 7.0 was neutral. If ammo was stored in a hardware store with fertilizers, lime, sprays, and cleaning solvents vapor hard to tell what could or would happen to the ammo. Chrome tanned leather in a ammo belt or case can turn the green booger loose on ammo too, And cause problems. [/QUOTE]
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Bullet cold weld to brass, real or myth?
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