Check with T/C for the extractor.... if they can't/won't help, try here....
http://www.e-gunparts.com/
As to the blow-by.... it's not unusual, especially if the chamber is a little on the loose side.... it's usually more noticable with hotter loads - bigger charges of slower-burning powder.
http://www.e-gunparts.com/
As to the blow-by.... it's not unusual, especially if the chamber is a little on the loose side.... it's usually more noticable with hotter loads - bigger charges of slower-burning powder.