straightening a warped receiver?

[ickmann]

Good advice. I guess that the real test will come from a range report when she's done. Everything's moving properly so that is a good sign.

Ian

[machinegunbob]

Try this: Get a piece of 5/8" thick cold rolled steel. Make it about .015" WIDER than yout bolt head. Make it about 18 inches long. Drill and tap three of four #3/8-16 holes thru the center so you can screw bolts in the top of it for removal. Remove the barrel from the gun! Put the rails in your reciever (no rivets, just place them approx. where they belong). Grease up the inside of the rails with hi-temp Never-seez (NAPA auto parts store) Grease up the outside of the 5/8 bar you just made with the same hi-temp Never-seez. POUND the 5/8 bar into the asss end of the reciever until it goes almost to the cam. Screw 3/8-16 bolts into the holes that you tapped in the 5/8 plate, and beat on them with a hammer to remove the bar from your reciever. (You an also use a four foot piece of 3/4" black pipe and pound it out from the muzzle end.Do it several times. You will have straightened out your reciever from the INSIDE-OUT. If, after several attempts, the bolt still won't ease thru the rails, THEN start to apply a LITTLE BIT of heat. Heating the crap out of a reciever will just take all of the carbon out of the metal, and your reciever's steel will be like silly putty. I realize that you have already solved your problem, but this may help out the next preson that has a warpage problem. Outside jigs usually work on one side, or the other. Doing it from the inside streches both sides at the same time. Better yet, pound the 5/8" plate inside of it, and apply the outside jig to it at the same time. If you want a picture of my 5/8" bar posted, maybe J. Baum will reduce it down for me and post it for you. I can't seem to do that trick.
MGB

[Bil]

Bob-do you also do watch repair?? Actually,after I re-read your post,it made sense.I once tried to straighten a wrecked car,we were replacing the roof,sawed off the posts and used a frame puller,jack,cable,everything made it worse.One of the guys poundes a big piece of square stock down into the post,and we bent it back with that,the pressure was inside,no kinking or twisting.I have an old pocket watch I will send for some of your tender repairs! Somewhere I saw a picture of a German soldier straightening a 42 by sticking the front of the barrel section fetween track links and pulling-I wonder how it worked! ---bil