I have a 223 Cooper 21, with the ammo it likes would get cosistant 1/4" groups at 200 yards I also have a heavy Savage that shot 5 consecitive M&M's at 200. I sold a Weatherby Vanguard VGX heavy barrel 22-250 (8lbs8oz) that shot just as well with factory Fed. Primium 50gr. I sold it because I have a 22BR that is equal ballisiticaly, and it shoots better! Remember, the scope can cost as much or more than the gun. Spend the extra money an use steel bases and rings. And lastly, if you use a bipod, the best is a Sinclare, but Harris will do (Don't waste your time on Caldwell, they look like a Harris but are flimsy). Ivan