I am testing various 22LR rimfire ammunition at 100 yards to determine which produces the tightest groups in my CZ 457 rifle. My rifle build is a factory-stock CZ 457 VPC, topped with an Area 419 Picatinny rail, and a Discovery Optics XED 6-36×56 scope (their top-tier long-range optic with Japanese eXtra Low Dispersion ED glass).
For this attempt, I am trying out Norma Tac-22. RWS manufactures this ammunition in Germany, which is also the company used to proof CZ 457 rifles at the factory. I have heard good reports on this ammo but my experience with my Ruger Precision Rimfire rifle yielded mixed results. For the test, I’m comparing it to CCI Standard Velocity, which many consider the best overall “bulk” rimfire ammo for bolt-action rifles and bullseye pistols.
After shooting 20 rounds of each, the results were essentially a tie. CCI produced slightly tighter groups but TAC-22’s 2nd group was tighter than any of CCI’s.
100 yard RESULTS
NORMA TAC-22
Avg Group: 1.38″
Mean Radius: .46 MOA
CCI STANDARD
Avg Group: 1.32″
Mean Radius: .47 MOA
