I have a 1944 Garand, just over 2 mil ser number. Post war operating rod. I get 7th round stoppage occasionally, and load all my own rounds to M-1 specs based on a few books that list those specs. I have only fired 4 clips of period mil surp ammo, and most clips I have were gunstore bought. Any thoughts on this? I try to keep all the case bases flat in the clip but that does not always want to happen, and some mil surp ammo hass a few that are not flat to the clip base. New spring kit installed. The base of round 7 gets thrown up too far and wedges at the case bottleneck in the chamber against the bolt.
A temporary fix is to correctly load the rounds in the clip- that is so that the top round is always to one side. I don’t recall if the top round in an 8 round clip is supposed to be to the left or right. This is done so the second to last round is to a certain side to reduce occurrences of the 7th round jam
Very early receivers were overmilled and needed to be depot repaired by welding, filing, and refinishing to repair this but by 1944 the receiver issue had been solved… The other thing that will cause this is if the ejector is proud of the bolt and it pushed the 7th round out of the clip to early causung it missfead…
c. Worn Or Improperly Formed Follower. A worn or improperly formed follower may cock or bind in its slideways in the receiver and thus prevent it from forcing the cartridge upward to its proper position in front of the bolt. remove the follower and slide assembly and check angle of the follower as outlined in paragraph 21a. Replace a badly worn follower.
Although this isn’t specific to the 7th round problem
I am going to check the ejector and the follower tonight, but all internal parts are in great shape. Post war '46 or so retro build but no later service. Very nice rifle. Thanks again.
Orion 7 makes good springs however if you have your old spring measure it, if it is between 19" and 20.25" put it back in your rifle and see if it still has the stoppages.
When you shoot what direction is your brass ejecting?
Here is a good reference for evaluating your used op rod spring for serviceability