Only have 1-1.5 k through it. Have shot sk, cci sv , gecco, and center- X, and some orphan boxes of eley etc. Most of the above at 50, working on positional drills. @ 100 it has been centerX and gecco. A buddy shot similarly @ 100 using gecco (my ammo and range, his gun) while I was stuck working, then rubbed salt in the wound showing me the targets. I have not done any lot testing simply using existing inventory, wife got me another case of ammo for Christmas and if it shoots tight little groups, great, if not - it's still getting sent downrange just maybe offhand or on barricade drills...