7.62x39 expansion/fragmentation threshold

Anyone know at what velocity any of these cease to expand/fragment?

-Hornady’s 123-grain Spire Point and VMAX
-Sierra’s 125-grain Pro-Hunter
-Speer’s 123-grain Hot-Cor Soft Point
-Winchester’s 123-grain PowerPoint
-Barnes’ 108-grain RRLP frangible 123-grain Triple-Shock and TAC-X-

Within the rifle’s effective range they all should expand lol.

ETA, I would like to know if they expand at 200yd… as far as I’m going with a “K”, any further and I’m runnin’ :wink:

The Hornady loads should expand down to 1500-1600 FPS.

Thx for the info. Is 1500-1600 FPS the average for most premium stuff in this cal. or just the Hornady loads?

That’s just for the Hornady loads. I’m not sure about the others. The TAC-X bullet should be pretty versatile. If your curious about a certain bullet or load shoot the manufacturer an email and they’ll probably have the info you need.