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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Unburned Powder in Big Cases, Right?
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<blockquote data-quote="Michael Eichele" data-source="post: 276648" data-attributes="member: 1007"><p>I have experienced "unburned" powder exiting my muzzle with one rifle. This was a factory 30-378 with a 26" barrel.</p><p></p><p>What was the proof? It was unburned kernals of powder inside and stuck in the plastic lense of my chronograph. After that, I shot through some cardboard at close range. You could see where the kernals went through the cardboard. </p><p></p><p>Yes it is real and does exist. </p><p></p><p>Some remedies include using a faster powder or less of the powder you are using, using a longer barrel and a proper twsit for the bullets used. </p><p></p><p>Burn rates change a bit depending on how heavy a bullet is or isnt, primer type, bullet to twist ratio, temprature, bore quality and probably more variables than you or I am aware of. All of these things go into how the powder will react in a given barrel. Some powders in a given situation will not burn fully in a large magnum. This makes it hard to predict any results without experimentation. It seems that when powder isnt burning efficiently, the necks are very black as well as the primer pockets. When you get it right, things appear much cleaner.</p><p></p><p>Bear in mind none of the above is scientifec proof. Just notes and thoughts from tens of thousands of rounds fired using a wide variety of calibers, bullets, powders and primers.</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 276648, member: 1007"] I have experienced "unburned" powder exiting my muzzle with one rifle. This was a factory 30-378 with a 26" barrel. What was the proof? It was unburned kernals of powder inside and stuck in the plastic lense of my chronograph. After that, I shot through some cardboard at close range. You could see where the kernals went through the cardboard. Yes it is real and does exist. Some remedies include using a faster powder or less of the powder you are using, using a longer barrel and a proper twsit for the bullets used. Burn rates change a bit depending on how heavy a bullet is or isnt, primer type, bullet to twist ratio, temprature, bore quality and probably more variables than you or I am aware of. All of these things go into how the powder will react in a given barrel. Some powders in a given situation will not burn fully in a large magnum. This makes it hard to predict any results without experimentation. It seems that when powder isnt burning efficiently, the necks are very black as well as the primer pockets. When you get it right, things appear much cleaner. Bear in mind none of the above is scientifec proof. Just notes and thoughts from tens of thousands of rounds fired using a wide variety of calibers, bullets, powders and primers. [/QUOTE]
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Unburned Powder in Big Cases, Right?
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