fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 9か月前Burning Upmander.xyzimagemessage-square546fedilinkarrow-up11.35K
arrow-up11.35KimageBurning Upmander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 9か月前message-square546fedilink
minus-square Morphit @feddit.uklinkfedilinkEnglisharrow-up11·9か月前Because the minor diameter of the barrel is 5.56 mm and the major diameter is 5.69 mm. If the bullet were smaller than that then the propellant would blow past it. They didn’t make a 'murican millimetre like they did with the imperial system.
Because the minor diameter of the barrel is 5.56 mm and the major diameter is 5.69 mm. If the bullet were smaller than that then the propellant would blow past it. They didn’t make a 'murican millimetre like they did with the imperial system.