My Crosman 180 shoots great, very accurate and low 600's on a warm day. Still, I sometimes notice a slight blow-by at the breech seal. I put in a poly tubing piece cut to .155". Thought it was slightly longer than the stock gasket. Is this minor leakage to be expected of these guns?
This message has been edited by sotol on Apr 14, 2012 10:44 AM