Thread: Caliber names

Thanks guys, big sigh of relief, i wont be firing anything near that, as its just a hunting rig, would love to burn the fuker out, would mean i've filled a freezer works!!!!!!!

Originally Posted by gimp

7.62mm groove, 7.8mm land = .308.

Etc.

It's to do with land/groove diameters for most of these

Sums it up. Don't forget about the old designation of caliber over grains of powder like the 30/30 = (caliber)/(grains of powder) = .30 cal (.308/.309) pill backed by 30 grains of smokeless powder.

Originally Posted by 308

Talk to women about clothes sizing - now there's a completely inconsistent nightmare

Why the fuck would anyone want to do that!

When talking about NATO rounds (both Com Bloc and NATO) ,using 5.56x45 as an example .The 5.56 refers to the size of the bore 9distance between the lands) ,then the 45 refers to the lenght of the case.
When it comes to Civillian rounds then the sky is your limit and any and every fruit loop method ( an example is the american abhorence of the metric system) is used to designate calibre such as ;
7mmx57 mauser is a 275 rigby . A 30/06 can be called a 7.62x63mm .A 307 is actually a 308 with a rim.

Originally Posted by Malhunting

Why the fuck would anyone want to do that!

Mal

All I can say is ...... A man would only be asking for it if he did do such a thing and It would serve himself right.

Cheers
Pete