M1 Garand Ejects Dented Brass
I've fired about 300 rounds of Lake City ball ammo from my M1 and about 20% of the brass comes out with a severe dent on one side of the case neck. The rifle seems to operate normally and I don't notice anything unusual when the brass ejects, other than it scatters all over the place, i.e. some to the front, some to the side, and some to the rear. I believe the dent occurs when the case ejects, not when it strikes the ground. I'm saving the brass to reload and I don't think the dented necks will be a problem. I'm just wondering what's causing the dents and if there's something wrong with the rifle. Are the ejected cases being ejected with such force that they rotate back into the action or the op rod? Has anyone had this issue. Anything to be worried about?
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I had 4 Garands at my range last week and got about the same percentage of dents as you were getting. I believe that's the "nature of the beast"! I keep a tapered center punch on my reloading bench to slide into the dented necks to round them out so they will admit the expander ball without crumpeling the case mouths. I'm getting pretty good case life, so far, so I don't think it's anything to worry about. There's some people on here that know a LOT more about Garands than I do and I'm sure they'll be along to correct me if I'm wrong!! 0 -
The military did not care if the case came out dented. Probable would not have care if it came out folded in the middle as long as the gun functioned 100%.You may be able to TUNE your reloads to dent larger or smaller % of cases with just a small change in powder. you might need to go up but maybe even go down The gas cylinder or piston could be worn or binding. I would clean these first and if that did not help would just play with different powder charges. 0 -
I love everything about an M1 Grand except carrying it. If you take up the slop an really tune it up to shoot tight groups it becomes unrelyable or so I have found. I think your solutions is working great. Oh and my only can of "dent be gone" is empty. 0 -
My M1 does the same thing with cases. I believe it's just part of ejection process. Happens fast enough that the case isn't completely clear of the receiver before the op rod starts its return stroke. That's my theory, anyway.[:)] 0 -
That is the nature of the beast with most, if not all, center fire, semi-automatic's...military or hunting model. I have seen it fromt he family of Browning, Remington, and Winchester hunting rifles, as well as from M1A, M-14, Mini 14, Garand's, AR-15's, AR-1o's, and FAL's. So don't feel singled out by your rifle. As mentioned before, it is the nature of the beast.
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The operating rod hump is hitting the brass as it's ejected and the rod moves forward. That's how the brass ejects to the front, usually to the 1 o'clock position. It's a deliberate design feature of the rifle. 0 -
Ya gotta just live w/ it.
Per above, easy to correct as well.
My own method: Just prior to tossing them into the tumbler, I take the bulleted end of a dummy or live round & jam it into that dented "D" shaped mouth. It rounds the "flat" right out.0 -
Funny, I think I'd have noticed that even though we let brass lay where it fell and never examined it in the Army. Ejection wasn't that vigorous.
As a point of interest, does case denting occur with unaltered Garands and USGI M-1 Ball and M-2 Ball or just with other ammunition?
There's a specialist in Central Va who's focus is accurizing Garands.
If anyone needs contact info, I can look him up and post the info.0 -
It IS NOT the nature of the gun. It is a function of the ejector and spring. the spring may be to strong and the end of the ejector pin may have the wrong angle on it. You may have to reduce the length of the spring and change the angle of the face of the pin. If you have a few spares, give it a try until it ejects foreward at about 1 oclock. 0 -
You could try experimenting with the blow back hole in the barrel if the spring experiment fails. 0 -
quote:Originally posted by cbyerly
It IS NOT the nature of the gun. It is a function of the ejector and spring. the spring may be to strong and the end of the ejector pin may have the wrong angle on it. You may have to reduce the length of the spring and change the angle of the face of the pin. If you have a few spares, give it a try until it ejects foreward at about 1 oclock.
Considering that the vast majority of Garands seem to do this (all but one of mine ding at least one case per clip), I would suggest that it is by and large the nature of the gun. The fact that it can be tuned out by adjusting or modifying original equipment does not change that fact.
On the other hand, the Garand in its original form still treats an empty case better than does the 1941 Johnson.0
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