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Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles. |
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#1
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Garand not stripping next round
So I recently acquired an M1 Garand from the CMP that was a complete rebuild with new barrel and all parts refinished. I was sighting in today with new Hornady range ammo and new clips (both also from CMP thank you) and accuracy was great but even though each round ejected I never had the next round stripped from the clip (closed bolt on empty chamber) and thus always had to cycle the operating rod to chamber the next round. Also, after the last round the clip failed to eject unless I pulled the operating rod fully to the rear of the action.
Can anyone let me know what of any adjustment are needed or simply some additional break in? The Garand is new to me but I have extensive history with the MIA. Thanks |
#2
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Try different ammo. I've read some where that M1s need strong ammo to operate the gas system. It might be short stroking and not fully cycling and leading to the issues you are getting.
This is pure assumption off my AR/AK/Bolt gun knowledge. I'm not a M1 pro not owned one but it sounds like this may be your issue being I shot one and know how they operate. |
#3
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1. I assume you stripped it, removed any packing grease, and then properly lubed it, right?
2. You mention using hornady ammo... afaik they don't have any garand loads. You didn't mention swapping out the gas plug, you're not supposed to be shooting modern factory ammo in a garand with the stock gas plug(if it is a load that's specifically made for the garand, shouldn't be an issue, go back to #1). |
#4
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It is short stroking. Strip everything and check for oprod binding. Do the tilt test.
Call CMP, they'll make it right. My OR was binding on my service grade as well, and they took care of everything. The heatshield on my FHG was the culprit, so check that for rub marks as well. |
#5
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Quote:
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#6
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Quote:
The preservative grease that is crammed into the nooks and crannies of some of the garands from CMP makes a very poor lube, a better lubricating grease should be used. BTW, not everything in a garand needs to be greased either, as there are a couple points where an oil does a better job, not to mention you wouldn't degrease the parts and then leave everything bare anyway. Last edited by Merc1138; 07-07-2013 at 8:59 PM.. |
#7
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Clean it. Grease it wherever there is "white" and shoot some M2 ball. If it still short-strokes send it back to CMP or take it to a reputable Garand mechanic.
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"If we make enough laws, we can all be criminals." Walnut media for bright brass http://www.calguns.net/calgunforum/s...d.php?t=621214 |
#8
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Quote:
If it were loose, you would be wasting gas out the front instead of fully pushing the op-rod rearward.
__________________
Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
#9
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Get adjustable gas plug, then you can use most ammo.
Midwayusa as a few. Sent from my DROID RAZR using Tapatalk 4 Beta
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Last edited by 2shotjoe; 07-07-2013 at 9:15 PM.. |
#10
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Pull the gas plug and check to see if gas port in barrel is visible and centered in gas cylinder cutout.
Back off or screw in gas cylinder lock nut to center port in gas cylinder cutout.. |
#11
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Good write-up to read through:
http://www.garandgear.com/m1-garand-failure-to-cycle
__________________
Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
#12
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I bet you never greased it did you? The Service Grade Specials come dry and need to be tore down and properly greased at all grease points
A dry Garand without grease can short stroke After you properly grease the rifle fire again and report back Any quality wheel bearing grease is more than adequate, no need for so called high tech gun grease |
#14
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My service grade special was in such great shape, but a little piece of spring had broken off. I'd just go ahead and replace that spring anyways, they are almost always worn down.
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#15
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Thanks to all for the replies.
The Ammo is M1 Garand specific (Hornady 81130 rated at 2800fps at muzzle). Yes, upon review the bolt and action is bone dry so I will tear down and lube the bearing points on the bolt and slide like I would my M1A (or mini-14 for that matter), thought there was at least some lube in there but not so. All I did prior to range was bore snake (is new criterion barrel) This was an arsenal rebuild by CMP so hope and the parts are in good shape but will also confirm gas port not being loose. I have to agree, issue is short stroke. Will let you all know how next outing goes. |
#16
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Besides broken operating springs lurking inside the operating rod, bits of rag, lost cleaning patches, paper, dried grease and dirt have been found inside which can bind up the spring and cause all sorts of feeding problems.
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#17
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M1 short stroking is 99% of the time caused by gas system failures. These can come in many forms. Check the simple stuff first. Ammo. Gas plug poppet valve loose, gas plug loose, or gas piston/cylider fit. Gas piston wear is usually eccentric and it doesn't take much to turn it into a single shot. Also check for deep scrtaches or gouges in the cylinder, as they allow gas to blow by. Like smle-man says, check for garbage in the op-rod tube.
The tolerance on a piston is .0007" (.5253" to .5260") and cylinder max of .5310" . Measure the cylinder at the power stroke area, which is the first 1/3rd. Stick hard and fast to these dimensions for match guns, for shooters and blasters the final test is "if it cycles". With a working gas system, the M1 will digest all kinds of dirt, sand, sewage, bilge, lack of lube, crud, etc. Tilt tests are fine for accuracy work, but a gun that doesnt pass it will still fuction fine for shooting at the enemy, as long as the gas system is working properly. The bottom line with your particular rifle is you got it from the CMP and they will bend over backwards to fix it. I have sent a few things back to them over the years and was never disappointed with what came back. Last edited by kendog4570; 07-09-2013 at 6:33 AM.. |
#20
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Well yeah, that could happen too. As far as why I mentioned cleaning and lubing it, my service grade showed up packed with so much gunk that I could barely manually operate the thing. The SG special I got was bone dry.
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#21
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This is not the first Service Grade Special that I have heard of that short stroked because of fresh park and no lube.
Not saying it cant be something else but you should try the most obviuos first so you arent chasing yor tail |
#22
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Took my Springfield service grade from CMP apart last night and measured the piston (perfect), the spring should be 20.25 inches it is 19 so I ordered a Fulton Armory from Brownell's for $7 and change.
When I read threads like this one I sometimes go back through and check the specs. on mine. Did anybody see the Garand collectors magazine this month? There is an article on barrel wear. Those guys shot over 14,000 rounds through a Garand. Whew these rifles are well built! Sorry to steal the thread.......
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A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed. |
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