wynn24--sgtt is right, in that generally speaking, standard velocity .22 ammo is usually more accurate than the high speed stuff. This much, I can tell you for certain. Your gun will tell you what brand it like's best. I have a BF target pistol, that shoots an inch at 100yds, if I use Eley brown box. At least the lot number I have now. Might change with a different lot number.Something to remember, when you find a certain brand of ammo the gun likes, buy a bunch of the same lot number, as it will change. Another pretty good one, is CCI Std. velocity. I'm lucky enough, I set up on commercial row at Camp Perry, here in Ohio. And if you want good price's on all kinds of .22 stuff, here is the place to go. Good lucj-gypsyman