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No. A 5.56 magazine is intended for a 5.56x45mm cartridge. The .270 is derived from the .30-06, which is 7.62x67mm. A 5.56 magazine could be used for .204 Ruger ammo, however, and, with a different floor plate, could be used for pretty much any intermediate cartridge 45mm in length or less - 6.8x43 Remington SPC, .50 Beowulf, .458 SOCOM, 6.5 Grendel, 7.62x39, 5.45x39, etc.

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13y ago

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