Quote History Quoted:
Wow! 15 thousandths headspace plus!
The primer is really backed out more than that!
Yeah OP that chamber is rough!
Polish with a piece of Scotch Brite pad loaded with polishing compound on a cleaning rod section chucked on a drill at low speed.
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Tried polishing the chamber using a dowel with 600 grit paper first--bound tight and snapped the dowel (lol).
Went with a oily (Marvel Mystery Oil) bisquit of 00 steel wool, attached to a dowel, spun by a drill. Kept adding steel wool. Felt like I made some headway.
Finished with .45 cal pistol brush wrapped in patches and slathered with automotive rubbing compound. Kept adding patches and rubbing compound until I saw some shine in the chamber.
Cleaned the chamber and reciever well, many patches on bore brushes.
Hit the range (finally) today.
Brass-cased ammo would not cycle--but I could manually break the action free. I was pretty bummed--figured the unit was a wall-hanger.
I had picked up some steel-cased ammo on a hunch, Wolf Military Classic, and SHAZZAMM!--the rifle cycled absolutely beautifully.
I proceeded to sight in the rifle (close enough) at 50, and checked the Zero at 100.
The rifle shot Wolf Military Classic into 4" at 100 yards from a rest--not great, but hey, the rifle was cycling nicely.
I'll post pics next range trip--but for now, the good news is that she cycles steel-cased nicely.