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Late QHMC with RSG stock |
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sfal7418
On Point Joined: Aug 18 2016 Location: RI Status: Offline Points: 108 |
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Posted: Jun 18 2018 at 7:32pm |
Move this to its own thread as I hope it will aid when someone does a search for info....
link to 1st thread http://www.uscarbinecal30.com/forum/quality-hardware-info_topic3484.html pics link https://imgur.com/a/8HFkgyO more info to follow Thanks al
Quality Hardware with RSG stock Sn 4824389 Barrel undated IBM with 2 P proofs first about 5 1/2 in from muzzle 2nd 1 1/2 in below 1st Bolt tp3 EM-Q right lug, Firing Pin tp3 NL-Q ,extractor tp3 W.Q. ,Ejector plunger tp 3 beveled Slide tp2 DA-Q In well Hammer LT-Q (upside down) left side (double strike) Trigger LT-Q Sear with hole GE-Q Mag release EP-Q Safety tp3 smooth both ends unmarked Trigger housing tp4 Q-TX spring tube Q marked on end Recoil plate RO-Q Stock RSG and O in slingwell....Quality ORD Wheel right side Hand guard R.S.G. marked Butt plate to me looks like a QHMC Front Sight Brazed unmarked |
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kro1970
On Point Joined: Jan 01 2016 Location: Central Florida Status: Offline Points: 301 |
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I have QHMC 4836XXX and is almost identical to yours but has a Winchester barrel. The RSG stock has an X stamped in the sling well. It would have been interesting to see the screw that is missing from the barrel band. QHMC type 2 barrel band screw had 3 punch marks on the end of the screw to keep it from coming out.[IMG]uploads/2023/DSC02139_
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painter777
Hard Corps Joined: Feb 18 2016 Location: Central MI Status: Offline Points: 1708 |
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Living Free because of those that serve.....
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sfal7418
On Point Joined: Aug 18 2016 Location: RI Status: Offline Points: 108 |
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also i was wondering about the 2 P proofs on the barrel....is this a norm for these?
Thanks al |
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blackfish
On Point Joined: Mar 30 2016 Location: 999-0 Status: Offline Points: 289 |
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When a barrel was made, its maker may have applied a P if it was proof fired before sending to, say QHMC. Originally all barrels needed proofing but this requirement was later dropped so that only a small fraction of barrels from a manufactured lot were proof fired before assembly into a completed carbine. When the carbine was assembled, the prime contractor proof fired the whole shebang and if it survived, applied their own proof mark to the barrel, bolt and receiver. Thus a small fraction of barrels will bear a double P.
Proof marks of many of the prime contractors are rather unique and can actually identify who used a particular barrel. In the photo, neither proof appears to my eyes to resemble QHMC's characteristic short-tailed font for their P. Their proof P almost looks like a D. Here's a Winchester barrel, proof fired when made, which was originally assembled into a carbine by QHMC. So, it might be that the barrel pictured is not original to the carbine, i.e. carbine is an attempted restoration. Or the photo angle may just hide that detail. I can't really say. There are many "original" Rockola's bearing QHMC-proofed Rockola barrels. So pay close attention to those P's! |
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sfal7418
On Point Joined: Aug 18 2016 Location: RI Status: Offline Points: 108 |
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posted some more pics of barrel and the whole rifle....gun was very dry...no oil ....dust and dirt but got all that cleaned and back together...now just need to find right band screw...
last pic is of 30.06 rd in muzzle....measured out to around .177 .178....hard to do 3 things at once while taking pic
Thanks for the help/input al
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New2brass
Moderator Group Dan Pinto, Photo Editor Joined: Nov 29 2015 Location: CT Status: Offline Points: 4627 |
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Originally all barrels for the barrel free issue program were all to be proof fired by the prime contractor.
It was determined that there would be a significant savings on proof ammo if the barrel when installed on a carbine would then be proof fired. It was something like 100 out of every 1000 barrels produced were to be proof fired. The reason for this was the 10% spares requirement. Barrels that were being shipped to another manufacture would take the 10% that were proofed and wrapped or plainly marked so the it was known that they passed proof firing. Those barrels were to be used to assemble barrel assemblies as "Spares" At some point the barrels were classified as "Critical" and the spares requirement was dropped to 5% and later brought back up to 10%. However the missing 5% later had to be made up. So why 2 proofs on some barrels? Clearly the barrels slated as spares wound up in production as evidence of 2 proofs. IMHO, if I was managing a plant and weapons were needed for the effort I would ask myself "whats more important" " spares are not immediately needed but weapons are" So yes an original carbine could have two P proofs. Look at CCNLs 199 and 371 for more infoo on requirements as well as the WB series. So I would say look to CCNL 384 for a list of known P proofs and sizes. The list missed at least one P proof which is discussed here Is it possible other were missed? First thing to do is make a good observation if the proofs are the same or different accounting for possible angles the proof was struck. Second take dome measurements to the 64th of an inch to determine whose proof it is. Early on I realized the problem "Subjective" measurements especially because I use a caliper to measure to the .001 of an inch. A deeper struck stamp will be larger than a lightly struck. then you have the masses measuring with whatever, so in 64ths became our standard and the person taking measurements has to average and compensate for missing length of stamp due to stamping at an angle. |
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New2brass
Moderator Group Dan Pinto, Photo Editor Joined: Nov 29 2015 Location: CT Status: Offline Points: 4627 |
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rotate the bullet in the muzzle to lightly score it. take a measurement at the point or just below to determine ME. .300 to .3005 is like new up to .3025 or .303 is the limit. .308 would have no grooves left
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sfal7418
On Point Joined: Aug 18 2016 Location: RI Status: Offline Points: 108 |
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N2B....Thanks for the tip....right on the line it was .304....just under line it was .305....assume had calipers in the line for the .304 reading....so not bad...:)
rotate the bullet in the muzzle to lightly score it. take a measurement at the point or just below to determine ME. .300 to .3005 is like new up to .3025 or .303 is the limit. .308 would have no grooves left Thanks again Al
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New2brass
Moderator Group Dan Pinto, Photo Editor Joined: Nov 29 2015 Location: CT Status: Offline Points: 4627 |
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For those new to calipers, just zeroing the dial may not give an accurate measurement.
Close the jaws on a piece of paper, pull out paper with enough friction that the paper drags but not rip. Close jaws and then zero. This way the dirt and dust does not skew the starting point |
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