Can we discuss the reliability of M-1 Carbines?????

[bonnie]

This has been an interesting read. I didn't see it covered in all the good comments but then I may have read over it.
Make sure the chamber is clean. Carbines never had a good chamber brush and this area gets neglected during cleaning. I use 9mm bore brushes and a short Chamber Maid rod, a flexible plastic coated steel cable, and clean from the receiver end.
You can also slide your cleaning rod in muzzle first then screw the brush in from receiver and pull it into the chamber to clean.