.22 rifles are notoriously ammunition sensitive. Usually, everything shoots pretty good, but some shoot really good.
I recommend buy fifty round boxes of everything you can find that is a price you are willing to spend for ammo and testing to see which YOUR rifle shoots best. My 10/22 likes CCI standard velocity at about $25/500 rounds.
Run a wet and a dry patch through the bore between types of ammo, fire about 10 fouling rounds before checking group size, use a rest, and shoot carefully.
You may find that your mini-mags are the best for your gun, but it is good to test others. Eventually, your 1,000 rounds will run out. Why not replace it with what shoots best in your rifle?
Doug
I recommend buy fifty round boxes of everything you can find that is a price you are willing to spend for ammo and testing to see which YOUR rifle shoots best. My 10/22 likes CCI standard velocity at about $25/500 rounds.
Run a wet and a dry patch through the bore between types of ammo, fire about 10 fouling rounds before checking group size, use a rest, and shoot carefully.
You may find that your mini-mags are the best for your gun, but it is good to test others. Eventually, your 1,000 rounds will run out. Why not replace it with what shoots best in your rifle?
Doug