As of 18 months ago - -
- - When I retired, the local sheriff's office was issuing UltraMax 55 gr. SP, remanufactured ammo we began getting on contract six or eight years previously. The issue patrol carbine was the Ruger Mini 14.
Interesting stuff - - I figured the re-man ammo was "good enough" for the iron sighted Rugers, which are not exactly reknown for supertight groupings. The sheriff acquired an AR-15A3 and asked me if I had time to set it up for him. I got a Leupold M8 scope, mount and rings and went to the range, taking some of the issue ammo, which I figured would be "good enough" to get the little carbine on paper. I was astounded when the UltraMaX gave good groups. When I sorted the remanufactured military brass by headstamps, I found that the Colt 1/9 barrel would shoot this ammo into less than 1"@100 yds. on demand - - Not just a couple of times, but consistently! In fact, it shot better with the UM than with the heavier bullet (62 or 69 gr?) Winchester match grade ammo.
I also found that the UM issue stuff would shoot very well in my Mark X Mini Mauser -- nearly as well as some carefully assembled handloads with Hornady and Sierra target and varmint bullets. All this led me to the purchase of my own AR-15A3 and a cheaper, Chinese made 4X compact scope.
Yeah, I know - - If someone had told me such information beforehand, I'd have been a bit dubious. But I did it myself! Full disclosure: My own AR-15A3 had a rougher trigger and didn't shoot the UM -- or anything else -- as well until I spend some money on the trigger group.
Best,
Johnny