I'm not knocking rifles. rifles are an intricate part of a team, but you can' say a shotgun should be completely taken away and are useless. we run in three man to four man teams. two or three rifles and a shotgun. I run the Remington 870 and love it to death. Shotguns are the most versatile light weapon system. a rifle only shots maybe two types of ammunition at most. look at all the types for shotgun. Birdshot, buck and ball, normal buckshot, dragon's breathe, door breaching rounds, etc. There are so many different types of rounds that you can use in that system. and when you fire a 00 buck shot, that's like shooting 8 rounds of .38. A shotgun has a firm planted place in the ZPOC.
Now lets say you do have a horde advancing on you and you need to by some time. I can shot off a couple 0 buckshot off the ground and skip them down hitting the Zeds in the legs. yes i know it wound kill them, but it will make them fall and make the one's behind them trip on the front row, buying us some time to get away.
John makes a good point. 150 rounds compared to maybe 8+1 and 6 on the sleeve. I can single load all day long but I'd rather slap another mag in. Shotguns are good weapons. They are awesome weapons and are very versitile. I love my Mossberg 500 Persuader. If it was all I had I would have no problem surviving. That being said, it isn't all I have. It isn't my first choice. That would go to my AR. But a lot of it is situational. If I'm looking to make a point there's nothing that says "Don't Mess Up My Day!" like a 2 3/4 inch slug being racked into a pump shotgun. With human adversaries it can be very intimidating. So can seeing a half dozen dudes in digicam bearing AR 15 rifles heading at you. But the shotgun has its place. For me, at least initially, the shotgun will be in the scabbard on my back.
AR in hand ready for business. .45 acp on my thigh or belt one in the pipe. Mossy 500 on my back loaded with slugs or buckshot. K-bar or Kukri on my belt. The load out will be different if I'm bugging home but if I have time to get ready for a fight you get the bull.
The 7.62x39 is a big round, I havent shot my Wasr at anything metal yet just at the range. But I imagine that you would have to have a level 3 vest or above to stop one.
Level III is only gonna stop pistol rounds. It's probably rated for .44 magnum at best. I'd have to look at the charts to be sure. It won't stop hi powered rifles. As I said in an earlier thread, even certain FMJ .22lr and .17 HMR rounds will penetrate kevlar. They may not do a whole lot of damage but they can get through. .22 lr and .17HMR get through because the pointed tip can part the kevlar. Where the velocity and sheer power of some rounds like a 7.62x39 or 5.56x45 will bull through kevlar. Plate armor combined with Kevlar will defeat many rounds but then you have your beast ammo used by many sniper. 300 Winchester, 300 Savage, 338 Lapua, 50BMG and even 7.62x51(.308 Win) will tear through a lot of shit.
Will 7.62x39 go through metal? It depends on the thickness.