It should be kept in mind at what range the particular 22lr ammo you do use goes subsonic. So the if the most expensive, best stuff you use goes sub at the longer range you plan to shoot, it will all be for naught.
Most standard velocity target stuff, is low velocity, so if you shoot usable groups at the longer ranges your in the ball park. Realizing, of course that extreme spread in velocity, will be the big enemy. (on the controllable end, off course wind is the big one)
CCI Standard Velocity is a good starting point.
Also rimfires are very sensitive to temp change affecting the primer mix, which adds an additional unknown to the mix. Keeping your loaded mags, and rounds in a padded ammo bag all at the same temp. helps uniformity.
Currently using a Ruger precision rimfire with a Diamondback 4-16 FFP on clays to 350 yds. Currently in excess of 5000 rds. its still going strong.
also a Ruger American rimfire with a Diamondback 4-12. outstanding turrets.
Neither of these scopes have parallax adjustment which isn't missed as the cone of fire is 4moa at 300 yds., the guns have cheek risers which center the eye with the optical axis of the scope.
Ringing steel and bottles is an accuracy event not a precision event.
Also have a Kimber SVT, and various Savages.
Since the ballistic drop and wind drift is similar to a 308 178 gr at 1000 yds. (in ratios)
Now is the time to get familiar with drop tables. (pull downs)
JBM Ballistic program is free and they have most 22lr in their pull down choices. give it a try.
