you're talking about the hydrodynamic shock factor

Well I'm not a firearms expert, so I welcome any education on the matter I can get.

a hypersonic round striking anywhere on the body can cause hemorrhaging in the brain

Like the 5.45×39mm?

vs

a large calibre supersonic or even subsonic round causing kinetic damage

any super or hyper sonic spitzer tipped round

I've heard of the AK74's rounds to be reffered to as super-sonic

vs a blunt nosed ball or wadcutter round

ak is supersonic

7.62x39mm

Hard to believe, considering the size.

hypersonic is usually referred to as above 3x speed of sound ( 3600 fps)

anything faster than the speed of sound is supersonic

Well yes, considering the word.

you can get 6.5 creedmoor +P with a 20 inch barrel to go hypersonic

I didn't say that I didn't believe you, just saying considering that the 7.62 is on the bigger size of medium cartrage class, it sounds weird.

7.62 is a win .308

avg 160 gr @ 2700 fps

Huh

big heavy and slower

avg 5.56 is 55 gr @ 3100 fps

Well the mm vs .inch sometimes gives me headaches. But yeah, that's how I've seen it so far.

A discovery channel series compared those two once.

the milspec loads are hotter

I think it was called "future weapons"

and the rounds are sometimes are solid alloy

Only the best for milispec

in europe they cant buy NATO rounds so they buy the .300 savage

I mean those are used by soldiers in wartime, no?

5.56 NATO and 7.62 NATO

Yes, NATO is the standard.

civi versions are the .223 and the win .308

I was reffering to milispec

Or was I wrong to presume?

milspec 5.56 is 55 gr @ +3300 fps

milspec 7.62 is 148gr @ +3000 fps

I'll take it its a company?

?

milspec = military specifications

Don't be so hard on me, as Germany I've got just enough knowledge to know an AR15 is not an assault rifle.

Ah.