Shooting long range with a .22 is ALOT of fun. Some of the best ammo i have found for it is Blazers and Peters believe it or not... I have shot ALOT out to 500 yards and those 2 are the ones that have stood out to me. One day i was shooting blazers at 500 yards and had everything dialed in to where i was holding cross hairs on target and hitting, then i switched to cci stingers. and aimed straight at it and was hitting. i was a little suprised. blazer 40gr 1235fps and the CCI 32gr 1640 fps needed the same adjustment.
And yeah its very good practice for shooting long range with other guns. You become super alert to any wind at all when shooting at extended ranges with the .22lr.
Have fun and let us know how it goes!