I'm about to change the brass transfer port on one of my Impact barrels. All I have on hand is the #242 blue Loctite for the threads. I think it will be ok, or should I get something else. What did you guys use?
#242 blue is fine for most everything. Never ever use red. You'll need a torch to remove it. I've used other types for very specialized cases like green on gas powered RC helicopters and purple on a Campagnolo bicycle crank. For an pcp rifle blue should be fine.