Once broken in (that ~500 rds of GB I mentioned), I find that Blazer and MiniMags run equally well, and that the Blazer is about the same as MiniMiags, filth-wise. I also have about the same results with Federal bulk packs. Getting those first 500, or so, GB's through it is critical to getting the break in done. Once that's achieved, most any decent quality .22 LR ammo will run about as reliably as .22 is capable of.