I own on of these guns. A 7.62 X25. It shoot like a dream. The rounds are cheap if you get them in the right places. I pay 21 dollars a box from a ammo dealer. But, I went to a gun show this week end and found a bunch of that surplus ammo and paid 10 cents a round for loose ammo. I went straight to the range to check out the ammo and it NEVER miss fired once. About a 3 foot ball of flame comes from the surplus ammo so, if your trying to hide your position, I don't know why you would, but, if you are, then you want the 21 dollar new ammo. It is made with different primers and powder. The answer to your questions are this. The gun is a good one. Watch out for the Romanian model. I got the one that is/was made in Yugoslavia. They seem to be the best. It is not uncommon to find these guns unfired or virtually unfired. They are a cold war relic and many were issued but not really fired. The soldiers may have had to qualify with them, I don't know that for sure, but after that they were not fired. I got one that had the sh-t fired out of it and it works great. I love this gun. It also has the only bullets I've seen spark when they hit a hard object.