The green box 9mm seems okay. I've put about 4000 rounds of it through my Glocks in the last two months since I burned up the last of my blazer beer cans that I had stocked up. Two friends and myself used it in a recent steel plate match and a GSSF match in pensecola, and didn't see a difference in accuracy or the guns function with it over anything else that we've used in the paste. It ran flawlessly in 3 differient G34s, G17s, G26s, and a 17C and a 17L. Alot of the other competitors who don't roll their own were also using it and no problems reported or seen with them using it either.How's the Monarch ammo? I bought a box of 7mm Rem Mag dirt cheap the other day just to try out. It was a lot cheaper than even the Core Lokt ammo.