Dirt I just thought..
of a couple things here...
The RPK-74 bbl should be about .908" and the SAR about .907" so you could be producing shaving that are holding you back. You could press the bbl and have a look see. That really aint to big a deal to do....
OR
I noticed you mentioned Xebec, so I am assuming you are using his press blocks??? If this is the case, have you checked to see if the trunnion push block is hitting the rear sight base causing the hangup?? When I did my build this is what was stoping the bbl from going in all the way..
Just a few thoughts.....
of a couple things here...
The RPK-74 bbl should be about .908" and the SAR about .907" so you could be producing shaving that are holding you back. You could press the bbl and have a look see. That really aint to big a deal to do....
OR
I noticed you mentioned Xebec, so I am assuming you are using his press blocks??? If this is the case, have you checked to see if the trunnion push block is hitting the rear sight base causing the hangup?? When I did my build this is what was stoping the bbl from going in all the way..
Just a few thoughts.....
