At $0.36 a round, I decided to give Wolf WPA Polyformance .308 (145 grain, FMJ) ammunition a try. I've got a PTR 91 GI rifle, and according to my quick google search before I ordered, cycling the ammo shouldn't be an issue. The 500 rounds were just delivered today, and I hope to make it out to the range later this week. Once I do, I'll post an update.