Recently I visited an indoor range and wanted to play with my Sig P238 but had no ammo, so bought the only box they had there. It was called "USA Ammo" and I gotta say, it's crap! Dirty stuff, and every single round failed to extract. At first I blamed it on my shooting, but came home, gave the gun a good cleaning, and compared the USA ammo to the Blazer brass I usually use, and every single round of the Blazer cycled completely, while the USA jammed every round.
Anyone else used this stuff? If I can't bet my life on it I won't use it, so hope this might help someone else.