It come out to .308 in the 7.62x51 cartridge. "30 calibre" is typically used to refer to that cartridge or the US .30-06 (7.62x63) cartridge. Not all cartridges labeled as 7.62 are the same diameter, however - due to different measuring methods, the Russian/Soviet 7.62x39 and 7.62x54R are considerably larger - the true bore diameter is actually 7.92mm (.312)
30 inches is 762mm
A 5.56mm is the same thing as a .225 caliber. If you do the math, a 30 caliber is MUCH bigger!
They are the same; just said in different order.
No! 9mm = .35 caliber - .354 caliber!
No
Only if the box is marked 30/30
Stevens 30 caliber rim fire is not a true 30 caliber. Chamber is .296. Bore .270 t0 .277. I found a 30 caliber rim fire round, at a gun show. It did not measure out to a 30 cal. Shot shooter
None. Same cartridge, different name.
As generally used terminology, no.
It used to indicate 30 caliber, 30 grains of smokeless powder. Not sure if that is still true. It started out as 30WCF meaning 30 caliber Winchester Center Fire. Marlin used 30-30 to make their models.
no that is a 3-0-8 it is 30 caliber a 223 is 5.56 mm it is 22.3 caliber
The 30 Winchester Center Fire (WCF) is the same as the 30-30 cartridge