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<blockquote data-quote="MarcSpaz" data-source="post: 15748649" data-attributes="member: 183445"><p>The reason why 5.56 mags don't work well has nothing to do with lubing the mags. followers should be able to run completely dry. If you are lubing them... something is wrong.</p><p></p><p>On a 5.56mm/.223 Rem mag, there are bullet guides inside the mags that aligns the .22 cal rounds to hit the feed ramps at the right angle and position. The guides push the .30 cal projectile of the 7.62x39 to far into the center of the mag, putting excessive pressure on the rim of the cartridge, basically binding the cartridge in the box magazine and having it misaligned for when it hits the feed ramps. On PMags vs. metal mags... PMags swell since the plastic is flexible, but them you have issues inserting the mag. The more rounds the mag holds and the more ammo you put in the mag, the steeper the pitch of the cartridge is at the bottom and the less likely it will feed correctly.</p><p></p><p>Tossing a bunch of lube at it, just hides that fact that the whole setup is completely wrong. That's why companies started making 300 Blackout mags. They saw people modding PMags by grinding the guides down, so Magpul just starting making them that way.</p><p></p><p>Now that I think about it... you may have great luck with a 30 round 300 Blackout mag from Magpul.</p></blockquote><p></p>
[QUOTE="MarcSpaz, post: 15748649, member: 183445"] The reason why 5.56 mags don't work well has nothing to do with lubing the mags. followers should be able to run completely dry. If you are lubing them... something is wrong. On a 5.56mm/.223 Rem mag, there are bullet guides inside the mags that aligns the .22 cal rounds to hit the feed ramps at the right angle and position. The guides push the .30 cal projectile of the 7.62x39 to far into the center of the mag, putting excessive pressure on the rim of the cartridge, basically binding the cartridge in the box magazine and having it misaligned for when it hits the feed ramps. On PMags vs. metal mags... PMags swell since the plastic is flexible, but them you have issues inserting the mag. The more rounds the mag holds and the more ammo you put in the mag, the steeper the pitch of the cartridge is at the bottom and the less likely it will feed correctly. Tossing a bunch of lube at it, just hides that fact that the whole setup is completely wrong. That's why companies started making 300 Blackout mags. They saw people modding PMags by grinding the guides down, so Magpul just starting making them that way. Now that I think about it... you may have great luck with a 30 round 300 Blackout mag from Magpul. [/QUOTE]
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