Would it be possible to create a firearm capable of firing 2 different calibre bullets from the same barrel? Example 5.56 and a 7.62, could the smaller cartridge be cased similar to
Is there such a thing as a bullet sleeve that would allow a smaller caliber bullet be fired from a larger caliber rifle? - Quora
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Savage Arms 110 Tactical Matte Black Bolt Action Rifle - 308 Winchester - 24in | Sportsman's Warehouse
Is there such a thing as a bullet sleeve that would allow a smaller caliber bullet be fired from a larger caliber rifle? - Quora
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