I don't have any heavy barrels as we have little use for them in this neck of the woods.
My most accurate rifle, CZ 452 Lux. This is one of the most accurate .22's I have owned period.
Centerfire: Ruger 77 MKII in 7x57. It shoots 139 hornady's with H4350 into consistent 1/2 MOA, 5 shot groups. Best 5 shot group so far was .424". This is the most accurate factory rifle I have owned, shot, or personaly seen shoot groups that small in a big game caliber.
I did eventually replace the trigger but have not improved the groups since the swap. I really do not think I can shoot any better than that without much bigger glass to aim it.
I also have a CZ 22LR but in the 453 variation. Retarded accurate to say the least. Ive said it before in the rim fire forum. Easily one of the best values in the industry.
