Magazines Mag-20 300 bo - Shooting Sports Forum


Ruger Mini-14 and Mini-30 Ruger Mini-14 and Mini-30 family of rifles

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Old 11-22-2020, 10:42   #1
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Mag-20 300 bo

Can I use a 300 BO mini 14 magazine with 5.56 or does it have block in it for the shorter 300 BO cartridge? I have a chance to buy one for a decent price but haven't seen one in person to compare.
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Old 11-22-2020, 11:56   #2
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Completely interchangeable
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Old 11-22-2020, 14:34   #3
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What 40nascar said.

Ruger marks the mags with "300 AAC Blackout" so people won't inadvertently load a mag full of 300 BLK into a Mini-14 chambered for 5.56. That's the only difference.

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Old 11-22-2020, 21:39   #4
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I have a 300 Black Out marked 20, same as my other eight 20 rounders.
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