I searched the group and don't see what seems to be a known issue with the 1903 safety. Mine is a rebuilt Rem 03A3 I guess from the SC bbl and ground test dimple.
The safety won't swing out of "READY" unless I pull the striker slightly, or push the bolt handle forward.
The problem is that the "cam" surface on the safety does not clear the rear edge of the safety groove on the striker.
I'm confident that I can radius the corner of the groove on the striker and resolve the issue.
But do the experts here have any comments about how common this is, what to look for, etc?
This rifle was neatly configured as a match rifle in the 1960s and well cared for. I don't understand how this could have been unnoticed.