https://www.milsurps.com/images/impo...SAM_2784-1.jpg
Bubba
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....:confused:...
And?
Nice photo.
Is the btm one a rebuild?
There must be a story?
refinishing can also cause the receivers color.
it almost looks like a Blue Sky receiver a friend had.
Cheers
I know that I looked for many years to find an early (pre June 1941) Winchester receiver "without" the anneal color before something turned-up. You could almost say that about 98% of all early pre June 1941 WRA receivers have the anneal color !
The receivers were cracking while firing rifle grenades. The annealing was to soften the heel and stop the cracking.
Pirate69 you need to do some homework ! the action will not open when the rifle grenade is fired
Back to the wives tale about broken op rods when firing grenades...
I don't think it was all a wives' tale -- I'm guessing two things might be responsible: one is that the cracking occurred during initial launcher testing before the need to vent the gas was realized. Another is that perhaps the stronger recoil flattened the bolt lugs/op rod camming surfaces just enough to allow a few thousandths of overtravel. Possible? It might also be bolt wear or tolerance slop that was coincidental with launcher development. I'm just working backward from the answer... they went to a softer steel, a rather big deal... and speculating on why that could be.
OK Bob...back and forth we go on this one. I believe that in the beginning they broke a few, but that was what trials were for. Then the gas cylinder lock screw relief valve came out and that was that. I think the most just gave up with time and 50,000 rds. The reciever tail on the other hand, takes a slam whenever the bolt travels rearward, and if you let your spring get mushy it's magnified. Just examine the wear marks on any standard rifle for that...
You may be right, but I think there is a clue in the fact that there were very few such incidents in the first million rifles. The bolt isn't supposed to hit the rear of the receiver.
??? Eh?Quote:
Originally Posted by bob seijas
What...?Quote:
Originally Posted by jmoore