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My GP-100 44 will accept Magnums

This is a discussion on My GP-100 44 will accept Magnums within the Ruger Double Action forums, part of the Pistol & Revolver Forum category; Originally Posted by CraigC I wouldn't recommend it but a .44Mag is not going to blow that gun to pieces. Maybe so, but it could ...


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Old January 7th, 2017, 10:47 AM   #16
 
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Quote:
Originally Posted by CraigC View Post
I wouldn't recommend it but a .44Mag is not going to blow that gun to pieces.
Maybe so, but it could stretch and crack things a bit. Do you feel lucky?



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Old January 7th, 2017, 10:50 AM   #17
 
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Originally Posted by gqucool View Post
Nipperdog I guess what I would suggest is to slip a brand new .44 Magnum shell into your GP100-.44 Special & see what happens! My guess is a foul up with the machining process that Waveform has brought up. If your gun handles & shoots the .44 Special's ok I guess it's your call whether to send your revolver into Ruger. I do feel it would be a good thing to call Ruger & get things started. Good luck, this is the 2nd issue I have read here on the Ruger Forum about GP100-.44Spec. Potential problems. Nipperdog good luck to you!!!

I will email Ruger Tech Support Monday, and attach the photos. Unfortunately I do not have any Factory Rounds on hand to try. I do not trim my revolver brass so they are full length Magnum Cases. I use a very light Roll Crimp on the Lead Bullets, but that shouldn't allow the Magnum Rounds to drop completely into the Cylinder. Looking at the GP's frame compared to my S&W 69's "L Frame", which IS Magnum Rated, I have no doubt that the GP-100 could handle one accidental magnum firing without a Catastrophic failure especially since I never load them to the Maximum Charge.
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Old January 7th, 2017, 11:25 AM   #18
 
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Compare your round's OAL with a .44 Mag in a reloading manual to see if it would fit. I'm guessing a SAAMI spec 44 mag would be too long to chamber but that's just a guess.

Try lengthing one of your reloads to 44mag spec and see if it will chamber and the cylinder rotate.


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Old January 7th, 2017, 11:42 AM   #19
 
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Originally Posted by SB Smith View Post
Maybe so, but it could stretch and crack things a bit. Do you feel lucky?
It would probably shorten its life but my money is on a .44Spl GP surviving .44Mag pressures for longer than a S&W 69 would.
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Old January 7th, 2017, 11:53 AM   #20
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Originally Posted by Tater View Post
If you can fit a store-bought 44 Magnum round into the cylinder, you need to call Ruger immediately and get it fixed.
^^^^^^^^^^^^
Ditto that right there.

If / repeat / if factory ammo fits in there, then the OP goes down in history as the guy who gets credit for the zillions of factory "recall" e-mail alerts we'll all be receiving.
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Old January 7th, 2017, 12:06 PM   #21
 
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Nipperdog,
is it possible you have an extremely heavy crimp on your reloads?

I ask becouse after reading all this I went and checked my new GP 44 out and factory 44 mag loads ( federal am eagle) bottom out on the shoulder in the cylinder leaving approx .030 between the cylinder and the bottom of the case rim and as a result the cylinder will not close, same with my reloads.
However .030 is not that much so I wonder if a very heavy crimp or a case trimmed to short could be the culprit with your .44 mag rounds
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Old January 7th, 2017, 12:36 PM   #22
 
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I just tried 7 commercial loads in mine.
Only one, the Black Hills 240, would let the cylinder close & rotate.

There MAY be other factory loads that CAN fit.
I would not fire any Magnums through this gun.
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Old January 7th, 2017, 12:51 PM   #23
 
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I had a smith 25-5 in 45 colt ha had very larger cylinder throats it would accept 454 caul rounds and freely turn the cylinder. You may have a loose cylinder mouth. I would use 44 special rounds and be careful with rounds.
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Old January 7th, 2017, 12:51 PM   #24
 
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My curiousity got the best of me. Not having any factory .44mag ammo, I drove over to the local Shop that Received the Ruger for me. I explained the Situation and they were Kind enough to let me try 3 different brands of .44 Magnum factory Ammo. We tried Winchester, Federal, and Hornady and none of them would seat flush in the Cylinder to let it lock up. My Reloaded rounds are made from un trimmed once fired brass with a slight roll crimp to hold the Lead bullet in place as is common on .44mag reloads. So I can honestly say that Factory Rounds will not fit in the GP-100, But Reloads mayl. Be Cautious, and Happy Shooting.
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Old January 7th, 2017, 12:54 PM   #25
 
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Originally Posted by Nipperdog View Post
My curiousity got the best of me. Not having any factory .44mag ammo, I drove over to the local Shop that Received the Ruger for me. I explained the Situation and they were Kind enough to let me try 3 different brands of .44 Magnum factory Ammo. We tried Winchester, Federal, and Hornady and none of them would seat flush in the Cylinder to let it lock up. My Reloaded rounds are made from un trimmed once fired brass with a slight roll crimp to hold the Lead bullet in place as is common on .44mag reloads. So I can honestly say that Factory Rounds will not fit in the GP-100, But Reloads mayl. Be Cautious, and Happy Shooting.
You have ammo with trimmed brass, mag to special. I have used 44 mag brass for years for 44 special. The reason was I found 44 mag brass easier than I could find 44 special.
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Old January 7th, 2017, 01:00 PM   #26
 
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You can say that the factory .44 Mag rounds that YOU tried won't fit.
See my post above.
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Old January 7th, 2017, 01:08 PM   #27
 
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Originally Posted by DPris View Post
You can say that the factory .44 Mag rounds that YOU tried won't fit.
See my post above.
Denis
Saw your previous post about the BH Ammo dropping in. My opinion is that the cylinders may be reamed a little on the deep side,and some Factory Magnum rounds may fit in the Special cylinder. Does this apply to all of the guns out there. We don't know...............Lew
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Old January 7th, 2017, 01:09 PM   #28
 
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Originally Posted by Nipperdog View Post
So I can honestly say that Factory Rounds will not fit in the GP-100, But Reloads mayl. Be Cautious, and Happy Shooting.

Good deal Nipperdog and anyone else out there mums the word less Ruger gets word of your reloads if you ever need a service call.

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Old January 7th, 2017, 01:21 PM   #29
 
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Originally Posted by Nipperdog View Post
I received my new GP-100 44 yesterday. So today I took it out to my workshop to clean it up. I had a bag of .44mag reloads that were sitting on the bench intended for my S&W 69. They were loaded with a 250 grain Keith style Bullet in various cases. Just out of curiousity I inserted one of the 44 mag rounds into the cylinder of the GP-100 it dropped right in with the rim flush with the cylinder extractor. I was able to do the same thing with the other four chambers, and the Cylinder rotated freely when locked up. Now I would NEVER fire a Magnum round in a Revolver that was not designed to handle the same. I will have to be very careful when handling ammo at the range not to mix them up


I have one and I tried the 44 mag reloads and factory and they stick out about 1/8" and will not allow cylinder to close. I would say yours may have a quality error by Ruger. My 44 Special reloads and factory look to be about as far from barrel end of cylinder as yours though. Not sure but maybe should send back to Ruger. I did reload the 250 Grain bullet (Elmer style) and it is a little longer than the 240 is.

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Old January 7th, 2017, 01:24 PM   #30
 
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Am I the only one surprised the cylinder is long enough for a Keith bullet seated in .44Mag brass?
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