fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 10 天前Burning Upmander.xyzimagemessage-square548fedilinkarrow-up11.34Karrow-down1111
arrow-up11.23Karrow-down1imageBurning Upmander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 10 天前message-square548fedilink
minus-square Morphit @feddit.uklinkfedilinkEnglisharrow-up11·10 天前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.