I've read a lot of positive feedback about CZ .22LR so I became intrigued with their new offering, the 600 Range. I won a new one off Gunbroker at quite a discount and recently did the shakedown cruise with scope mounting and zeroing. I probably overdid the break-in (CZ does not recommend it needed it) by shooting 1 and then cleaning it for the first 5 shots. I was on the bull by shot 4 and shot 5 touched it. Today, my plan was 2 shots, clean x 5 rounds and call it a day on break-in. I used a random charge of 30 y/o Reloader 12 (discontinued) 168 factory seconds from Midway and here is the result. I called the flyer. All 10 in 3/4" and best 9 in 0.6" at 100 yards. Wind left to right 2-6mph. Not too bad for a rifle under $900.