fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 3 个月前Burning Upmander.xyzexternal-linkmessage-square548fedilinkarrow-up11.35Karrow-down1112
arrow-up11.24Karrow-down1external-linkBurning Upmander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 3 个月前message-square548fedilink
minus-square Morphit @feddit.uklinkfedilinkEnglisharrow-up11·3 个月前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.