View Full Version : 7.62x25 vs. 5.7x28

02-22-2009, 8:31 PM
This is just for fun, but what do you guys think would penetrate better? My intuition says that with regular ball ammo the 7.62 would own and with AP rounds the 7.62x25 would also own again. Of course this is based off of almost no knowledge and zero experience. Anyone wanna chime in for fun?

02-22-2009, 8:33 PM
And if anyone actually has comparisons of the two I would die to read or wath them.

Army GI
02-22-2009, 8:33 PM
I think the 7.62 Tok would be more stable because of the round nose and heavier weight while the 5.7 would start to tumble soon after penetrating the body cause of the pointed bullet.

But don't know for sure, check http://www.brassfetcher.com/oldindex.html


02-22-2009, 8:35 PM
I'd guess that FN's 5.7 x 28mm would be the winner, being a more modern design and developed specifically to defeat body armor via the small-caliber/high-speed theory. But that's just my guess. Reality could be far different.

02-22-2009, 8:35 PM
Wow, I totally forget to specify. I meant not only penetrating flesh but ARMOR!

Army GI
02-22-2009, 8:37 PM
Hmm, I don't know. I saw at theboxotruth.com that the 762Tok penetrated a Kevlar helmet through and through.

I've read somewhere that some 5.7mm has steel core penetrators just like M855.

Either way I think it'll be a close call with the advantage going to the 5.7 with the steel core penetrators. The 762Tok only comes in FMJ...military versions that is.

02-22-2009, 8:41 PM
I know that the 7.62 isnt avaialable with steel penetrators, but I am thinking that if it was, which couldnt be too hard to make happen, it would knock the socks off of the 5.7

Army GI
02-22-2009, 8:58 PM
No doubt. I actually like the Tok, a lot. I wish it was available in a more ergonomically designed handgun. The TT-33 and CZ52 aren't the most natural pointing handguns if you know what I mean.

I was thinking about converting a 38 Super 1911 into 7.62 Tok, but I don't know if it's worth the trouble. Plus I think I'd rather have it in a high cap magazine.

02-22-2009, 9:26 PM
Cant the tok penetrate armor without a steel penitrator, it travels at the right speed

02-23-2009, 2:59 AM
The 7.62 round penetrates very well- but the idea is to inflict maximum damage after penetrating armor.. so if the 5.7 yaws after initial penetration, it would be the superior round as far as effectiveness goes.

I have no doubt of the 7.62's penetration- but it would most likely just drill a small .30 hole right through the target.

The 5.7 also has a much smaller frontal area, so it's easier to push through things.


shootin' nuke
02-23-2009, 6:42 AM
If you think 7.62x25 is good, look up 22 Reed's Express. It's a wildcat thats based on 7.62x25. More energy and velocity then 5.7x28. A novel concept, but you have to handload for it.

Army GI
02-23-2009, 7:10 AM
I have no doubt of the 7.62's penetration- but it would most likely just drill a small .30 hole right through the target.

I don't like when people say this. Having any sized hole drilled through your heart is not OK.

The 308 FMJ also drills through a body, but nobody says it's a poor stopper. Quite the contrary.

02-23-2009, 7:58 AM
Ah, the old "stopping power" discussion. Yeah, it doesn't throw the BG back 10 yards like the .45 would? :p