For an up to $500.00 budget I'd suggest a 22 Kral Puncher Breaker Silent and get a baffle kit if you need quiet. Nothing needs to be done it should shoot just fine as is and you can easily adjust it's power externally. Mine shoots nickle sized groups at 50 yards straight out of the box with both JSB 15.9s and 18gr and it also shoots the cheap Wal-Mart Crosman Premier hollowpoints almost as well. I slid the factory silencer forward and it made it quieter. YO!
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