I have a Sig GSR 1911 in 45acp. Factory unthreaded barrel is very very accurate. Picked up a Nighthawk threaded barrel in trade and had a local smith fit the barrel to my gun. Problem is the accuracy with the threaded barrel without the can is noticeably worse, and with the boostered Liberty Cosmic, it is just unacceptable, grouping low and scattered. The baffles are not being clipped. Do you guys think it’s just a bad barrel or possibly the fitting? Anyone had a similar experience?