Best part is that the measurement is only tangentially related to the actual diameter of the bullet; FN 5.7×28mm, 5.56 NATO, and the soviet 5.6×39mm are all 5.7mm across.
Unlike gauge, which is always 1 over the cube root of the barrel diameter divided by the cube root of the density of lead.
Best part is that the measurement is only tangentially related to the actual diameter of the bullet; FN 5.7×28mm, 5.56 NATO, and the soviet 5.6×39mm are all 5.7mm across.
Unlike gauge, which is always 1 over the cube root of the barrel diameter divided by the cube root of the density of lead.