The only issue that I ever had with it was in my Springfield Champion 1911. To be fair, it was the older lacquer-coated cases and, at the time, it was the cheapest ball I could find. That's basically why I bought it, as I needed to break-in the pistol before I used it for a training class.
I started getting FTExtracts after putting 3 or 4 mags full through it quickly. Probably what got it hot enough to start melting the lacquer. Combined with the tight chamber dimensions, it wasn't a good match. FWIW, the rest of it ran fine in my CZ 97B and a GI-spec 1911. Fortunately, I ran into a deal at Natchez on Blazer .45 that was only about 10 bucks a case more, so I didn't have to try using it for the class.
I've put several thousand 7.62x39s through my small assortment of SKSes and Mini-30 with no functional problems. The powder does leave a lot of residue, and the average accuracy is mediocre at best, but for inexpensive plinking and practice it's worked out alright. At least it allows me to conserve what remains of my hoarded Chinese 7.62x39 a bit longer.
Now that the true Mil Surp supplies have pretty much dried-up and their prices are more "competitive" with other generic ball I don't buy as much of it.
The polymer-coated 9x19 runs fine in all three of my pistols and the 9x18 Mak stuff gives very good accuracy from my Bulgie.
The RF Match Target gives nice accuracy, but as I can buy Aguila SV that does just as well or better in my rifles for less than half the price I haven't used more than a brick of it.
