Gunsmith for a Garand

L.Parratt said:
Timing for the enbloc release/bolt closure. It is a go/no go gauge thats inserted into.the rifle like a enbloc is. But if your enbloc isn't prematurely unlocking might be a dead end aswell. (Hard to see exactly in your video)

You mention that a certain type of ammo is cycling fine without this issue, im curious if that ammo is "hotter" and giving the rifle more gas to cycle with. And this 7th round failure to feed is fron a short stroke where the bolt doesnt fully clear the round and is causing that tip up and dent.

Any measurements on your op rod Piston tip? Gas cylinder inside diameter is harder to measure unfortunately.
Click to expand...
I have this slow mo. Its not the 7th rounds but its might give you some clue.
https://imgur.com/F78XVL9
 
Jesus.C said:
So the fix could be a new gas tube / op rod? The worn barrel certainly doesnt help.
Click to expand...
I think the best fix would most likely be replacing the op rod Piston with a oversized one thatll match your gas cylinder. If my theory is correct and this is a light cycling situation.

That video unfortunately doesn't help me diagnose anything sorry! Sick video however.
 
L.Parratt said:
I think the best fix would most likely be replacing the op rod Piston with a oversized one thatll match your gas cylinder. If my theory is correct and this is a light cycling situation.

That video unfortunately doesn't help me diagnose anything sorry! Sick video however.
Click to expand...
Are you able to swap just the head. Ive read its doable but not as simple as its may seem. Or simply swapping the entire rod? Is this a project you feel confident undertaking?
 
I sent a rifle to Nick at Vulcan, and he diagnosed it needed a new piston tip. No functioning problems since!

What makes me curious is how an early M1 escaped the arsenal recall and refit orders. Was it already out of US service by then?
 
maple_leaf_eh said:
I sent a rifle to Nick at Vulcan, and he diagnosed it needed a new piston tip. No functioning problems since!

What makes me curious is how an early M1 escaped the arsenal recall and refit orders. Was it already out of US service by then?
Click to expand...
If I was a betting man, 90%+ of Garands rifles that have all early parts were assembled like that after the war as a collectors item.
 
maple_leaf_eh said:
I sent a rifle to Nick at Vulcan, and he diagnosed it needed a new piston tip. No functioning problems since!

What makes me curious is how an early M1 escaped the arsenal recall and refit orders. Was it already out of US service by then?
Click to expand...
Were you experiencing 7th round stoppage like I am or just general feeding issue? It truly boggle my mind that it only occur on the 7th. What is so different about extracting the 6th an loading the 7th.
 
Jesus.C said:
Were you experiencing 7th round stoppage like I am or just general feeding issue? It truly boggle my mind that it only occur on the 7th. What is so different about extracting the 6th an loading the 7th.
Click to expand...
Was I experiencing any stoppages? No. Just routine inspection and repair. The stoppage was a real head scratcher for the US ordnance corps too. I think Hatcher writes about it in his books.
 
1000051600.jpg

Reading some more into my shop manuals and service manuals. This might be a clip issue aswell.

If you get a chance to meause the clip mouths we can see if theyre in spec, I know you mentioned previously you did but if you could post pics of the measurements and the mfg that would be cool!

.765" +/- .01, but id see if you can pry one open to .775"

.875" when loaded with rounds
 
Last edited:
L.Parratt said:
View attachment 1063906

Reading some more into my shop manuals and service manuals. This might be a clip issue aswell.

If you get a chance to meause the clip mouths we can see if theyre in spec, I know you mentioned previously you did but if you could post pics of the measurements and the mfg that would be cool!

.765" +/- .01, but id see if you can pry one open to .775"

.875" when loaded with rounds
Click to expand...
Will do. But I wont be home until tommorow evening.
 
1 is at 19.1mm/0.752in measure from inside the mouth without applying any pressure with the caliper

2 are at 18.9mm/0.744 in

Brand for the 3 is BRW

When loaded im at 22.0mm/8.66inch. Im not exactly where youre at but I cant messup that part im sitting on the brass.
 

Attachments

  • 20251228_202737.jpg
    20251228_202737.jpg
    45.8 KB · Views: 4
  • 20251228_202303.jpg
    20251228_202303.jpg
    86.5 KB · Views: 4
  • 20251228_202256.jpg
    20251228_202256.jpg
    80.9 KB · Views: 4
  • 20251228_202231.jpg
    20251228_202231.jpg
    70.6 KB · Views: 5
  • 20251228_201629.jpg
    20251228_201629.jpg
    68.1 KB · Views: 3
  • 20251228_201341.jpg
    20251228_201341.jpg
    92.5 KB · Views: 4
Just stumbled on this on another forum and passing it along.

It doesn't matter any more. The idea of always loading the enbloc so that the top round was on the right side began when jams were occurring at the 7th round. The problem occurred when the drilling the hole in the receiver for the barrel. They drilled too far into the receiver and cut off part of the left guide rib. The missing part of the guide didn't allowed the 7th round to be supported properly and allowed the 7th round to move around and possibly cause a jam. If the enbloc was loaded so that the 7th round was on the left side (top round on the left) a jam could occur. If the 7th round was on the right (top round on the right)...no jam. Until the problem of the left guide was discovered and resolved, loading the enbloc with top round on the right was a temporary fix.
Click to expand...
 
Last edited:
L.Parratt said:
If I was a betting man, 90%+ of Garands rifles that have all early parts were assembled like that after the war as a collectors item.
Click to expand...
100%

American standard practice was to throw parts together in a pile and start cleaning. The odds of the exact same parts staying with the same rifle were low. And that’s ignoring armourers changing out parts and maintaining them as time progressed.

There are some exemptions (such as British returns which were unused and left as new) but most in ‘original’ condition were made that way not found that way.
 
You must log in or register to reply here.
Back
Top Bottom