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Tennessee Gun Owners Forums
Muzzleloader
Breech plug question
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<blockquote data-quote="jlanecr500" data-source="post: 5523913" data-attributes="member: 16430"><p>The flash or vent hole is designed to perform multiple tasks. 1, to prevent loose powder from reaching the primer which would fall out if you remove the primer when you want to render the gun unloaded per TWRA rules. 2 the volume between the vent and the primer is called the primer flame channel. When the primer fires, the powder ignites. As pressure rises in the barrel, the vent hole meters flow back to the primer. If the vent hole is too large, pressure will rise too quickly on the primer. The same thing happens with a long barrel. Think pressure vs time vs flow thru the vent hole. 3 209 primers make a lot of pressure but are not as hot as a large rifle primer. Hot 209 primers make enough pressure to move the bullet and powder before the powder is fully ignited. Hence the need for muzzleloader low power primers like 777 primers or other muzzleloader 209 primers.</p><p></p><p>It's best to leave the vent hole alone. Clean the primer flame channel but leave the vent hole alone.</p></blockquote><p></p>
[QUOTE="jlanecr500, post: 5523913, member: 16430"] The flash or vent hole is designed to perform multiple tasks. 1, to prevent loose powder from reaching the primer which would fall out if you remove the primer when you want to render the gun unloaded per TWRA rules. 2 the volume between the vent and the primer is called the primer flame channel. When the primer fires, the powder ignites. As pressure rises in the barrel, the vent hole meters flow back to the primer. If the vent hole is too large, pressure will rise too quickly on the primer. The same thing happens with a long barrel. Think pressure vs time vs flow thru the vent hole. 3 209 primers make a lot of pressure but are not as hot as a large rifle primer. Hot 209 primers make enough pressure to move the bullet and powder before the powder is fully ignited. Hence the need for muzzleloader low power primers like 777 primers or other muzzleloader 209 primers. It's best to leave the vent hole alone. Clean the primer flame channel but leave the vent hole alone. [/QUOTE]
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Tennessee Gun Owners Forums
Muzzleloader
Breech plug question
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