I’ve had a Weihrauch hw50 .22 lemon before. It was putting out less than 9 fpe straight out of the box according to the included chrony tape and verified by my chrony. It vibrated so bad I could not keep a scope on it because it would shear off stop pins! I tore it down and discovered a broken spring and burned up and cracked piston seal. A vortek kit and some elbow grease made it shoot like a dream now. Send your gun back if you don’t want to go through it. The old “shoot two tins through it and it will settle down” ain’t the gospel for every gun.
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