I’ve experienced a clean pass through by a 7.62x39 round. The bullet passed to the right of my femur three inches above the knee of my right leg. The wound looked very similar to what the victim here has. Roughly the size of a pen in diameter with clean edges. I was less than fifteen feet from the man who shot me in a room roughly fifteen feet long and twelve feet wide. I have seen several other people who had the same wound characteristics after being shot with AKs and variants. All of the times I’ve seen these clean wounds and been present when the incidents happened the shooter was no more than twenty feet and no less than roughly five feet away from the target. So I can only surmise through personal life experience and not scientific data that it has something to do with primary muzzle velocity. As I have also witnessed countless people shot with 7.62x39 outside of these parameters and the wound characteristics are vastly different. The wounds appear devastating for lack of a better word. With jagged entry and exits at odd angles. ie the bullet enters the chest and exits the lower back.
If the distance between the muzzle and the victim was greater than five feet this would allow the stippling fragments to dissipate or burn up. I say greater than five feet because the vast majority of ammunition in the middle east is corrosive and of low quality. This causes more particulates to be sent out of the muzzle behind the projectile so stippling can happen further away from the muzzle compared to say a clean burning non corrosive round.
We can only go off of the second hand information we have off of this case but we can easily assume she was shot at close range within that 5-20 foot distance because of the type of killing it was, she was outdoors allowing for less stippling particulates than would be in an enclosed space and within the peak velocity parameters of a 7.62x39 bullet traveling at 2300FPS (+/- 5fps) being fired out of the standard 16.5" AK47 barrel.
It has to do with stability and velocity. I do a LOT of ballistics gel testing. The 7.62x39 is large, but slow. This leads to velocities below fragmentation threshold and stability above the tumbling threshold. In other words, too slow to cause catastrophic hydraulic shock too soft tissue and to stable to destructively tumble.
Glad you survived that haji POS, and hope you sent the mofo to Allah in style.
Was your femur or femoral artery damaged?