7.65 = .32 ACP
30.12" Direct Conversion Formula 765 mm* 1 in 25.4 mm = 30.12 in
.223 Calibre although .223 Will fit on a 5.65 mm, a 5.65 mm Will not fit in a .223 calibre chamber.
.30 caliber.
765 millimeters = 30.1181102 inches Direct Conversion Formula 765 mm* 1 in 25.4 mm = 30.11811024 in
29.5275591 inches
buffaloarms.com
There are various types of ammunition. There are also particular guns that use the recently developed 30 mm ammunition. Among them are aircraft guns and armoured vehicle guns.
6.8mm / .270
7.65 mm is usually .32 Automatic Pistol. The .308 is 7.62 x 51
If the barrel has 5.56 printed on it or you have verified with the manufacturer that ALL of their barrels are good for 5.56 ammunition.
A 30-06 in MM is a 7.62x61 round. Also considered a 30 cal.
ATK Small Caliber Systems is the world's leading producer of high-quality ammunition and links for the military in 5.56 mm, 7.62 mm and .50-caliber rounds.