.223 Calibre although .223 Will fit on a 5.65 mm, a 5.65 mm Will not fit in a .223 calibre chamber.
40 mm = 1.575 inches 40 mm = 4 cm
40 mm = 4 cm
Since there are 1000 mm in one meter, then 40 mm is 40/1000 = 0.040 meters
No because 40 meters is equivalent to 40,000 mm
A 30-06 in MM is a 7.62x61 round. Also considered a 30 cal.
Caliber is American, MM is Metric. One type of munitions can be called two different sizes.
No, no, no. Do not attempt to do this.
.223 Calibre although .223 Will fit on a 5.65 mm, a 5.65 mm Will not fit in a .223 calibre chamber.
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.
.30 caliber.
40 mm = 1.575 inches 40 mm = 4 cm
3/4 of an inch is 19 mm.
Very similar. The 40 is slightly larger and heavier, but compensates with more stopping power. I have found both equally accurate. Given a choice, I'd take the 40 cal for use in actual practice, but would use the 9mm for the range and target shooting.
45 cal. Long Colt (.45LC) rounds like those used in a 45 cal. revolver. Many of this type of Derringer also can fire .410 gauge shotgun shells. Do a search for your specific model and get the manufacturers recommendations for ammunition.
6.8mm / .270