I brought out my. 17hmr shot 5 groups. Each one wasabout an inch across at 100 yards. Shot at a couple of cans ans such and i went through all 50 rounds in the box. This is the crazy part I opened the other box and had a 5 round group to find my group was the size of a dime! This shocked me because I've always been tought that guns get more inaccuate the more you shoot them (because of the copper,lead and powder). Have you guys had a similar experience?