GP100 44 Spl +P loads

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Yankee_Papa

Bearcat
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Mar 24, 2006
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Does the 44 Spl GP100 have +P capability? Will it handle Keith loads? Will it handle near 44 Mag loads like the S&W Model 24?
 

Yankee_Papa

Bearcat
Joined
Mar 24, 2006
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54
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Southwest NH
From your Owners Manual:

The five-shot GP100® 44 Special is chambered for the .44 Special cartridge only.

You didn't answer the question.

"Will it handle NEAR 44 Mag loads like the S&W Model 24?"

FYI the 44 Mag was developed with a Model 24 (44 Spl).
 

1chessiefan

Bearcat
Joined
Jun 3, 2022
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Ohio
Yankee Papa,
I do not think you should run hot loads through the GP100 .44 Special. The forcing cones are pretty thin. I had to send one back to Ruger for a new barrel due to a cracked forcing cone. I had mostly shot standard pressure factory .44 Special in it. I had also run some of Buffalo Bore’s full wadcutter loads through it. I cannot say what caused the problem but I will not be running any hot loads through it in the future.

1chessiefan
 
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Rclark

Hunter
Joined
Jan 1, 2009
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3,307
Location
Butte, MT
I do not think you should run hot loads through the GP100 .44 Special. The forcing cones are pretty thin.
I would agree with that. I stick with the Skeeter load in mine. That's has 'hot' as I will go with the the GP-100. YMMV. My .44 Special BH flattops on the other hand will take warmer loads.... but I have no need to go there, even though I ran one of 'em with some Keith loads while testing.... I have .44 Magnums that are 'made' to handle magnum loads if needed.
 

stanley_white

Bearcat
Joined
Mar 9, 2022
Messages
18
Because I was curious I see the 4.2” GP100 in 44 Special weighs 37 ounces while the 4.25” barrel S&W Model 69 in 44 Magnum weighs 37.4 ounces.

Please don’t ban me.

:)

-Stan
 

JStacy

Blackhawk
Joined
May 6, 2016
Messages
503
Location
south Texas
OP you mention the S&W mod 24 handling near 44 mag loads. I have seen a couple of Mod24 & 624's fall victim to that thinking with bulged and cracked forcing cones. The load was the Keith bullet and 2400 load Elmer used. I have a vintage Mod 24 and it gets fed 7.0/unique and 240 csw and it is very accurate with that load. I also have a Super Redhawk to shoot 44 mag loads out of. I would not exceed the max 44 special loads listed in most manuals in any 44 spl. Hot 44 spls is the reason they came out with the 44 mag in DA revolvers.
 

Onty

Single-Sixer
Joined
Dec 17, 2000
Messages
396
OP you mention the S&W mod 24 handling near 44 mag loads. I have seen a couple of Mod24 & 624's fall victim to that thinking with bulged and cracked forcing cones. The load was the Keith bullet and 2400 load Elmer used.
I think that the main reason for bulged and cracked forcing cones on S&W M24 and M624 is longer unsupported barrel protruding from the frame, to compensate for shorter cylinder:

M624:
Smith Wesson M624.JPG

M629:
Smith Wesson M629-2.JPG
 

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Biggfoot44

Blackhawk
Joined
Sep 6, 2009
Messages
821
*IF* you're going to draw rough parallels between your GP-100 and various S&W Revolvers , the best comparison is with the L Frame 696 .
 

BULL'S-EYE

Bearcat
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Dec 2, 2021
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Location
East Central, Indiana
I had a 5" full lug GP that went down the road unfired by me due to the SCARY thin forcing cone...And normally, I shoot everything that passes through my hands. I'd stick to standard pressure 44 Special loads only in the GP myself, and save the hot rodded loads for the Redhawk.
 

Thel

Blackhawk
Joined
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Pacific Northwest
"I think that the main reason for bulged and cracked forcing cones on S&W M24 and M624 is longer unsupported barrel protruding from the frame, to compensate for shorter cylinder:"

Interestingly, when Dave Clements was doing his .44 Sp conversions of GPs he used a custom longer cylinder and shortened the forcing cone. Another member commented this allowed him to maintain his guns could take a 250 gr bullet at 1200 fps. Also, the 10mm GP100 uses a barrel with a thicker shank. Wonder why Ruger does not change over to the larger diameter for the .44's. Marc Morganti offers some conversions of Ruger .44's to a custom barrel with the larger shank and claims they can take loads approaching the .44 Mag.
 

Onty

Single-Sixer
Joined
Dec 17, 2000
Messages
396
Interestingly, when Dave Clements was doing his .44 Sp conversions of GPs he used a custom longer cylinder and shortened the forcing cone. Another member commented this allowed him to maintain his guns could take a 250 gr bullet at 1200 fps. Also, the 10mm GP100 uses a barrel with a thicker shank. Wonder why Ruger does not change over to the larger diameter for the .44's. Marc Morganti offers some conversions of Ruger .44's to a custom barrel with the larger shank and claims they can take loads approaching the .44 Mag.
According to post quoted and linked her https://www.rugerforum.com/threads/...omething-new-and-what-we-could-expect.298775/ , Ruger did change barrel thread on GP100 10mm Auto. It's now 11/16", trifle larger than even on S&W N-frame. Could be that they realized problem with 44 Special on GP100 you and BULL'S-EYE mentioned. That will open possibility in GP100 for anything up to even 45 Colt and 45 ACP. If Ruger makes 10mm and 45 same way as they made 45 Colt/45 ACP Redhawk, that might create revolvers that could outsell any revolver they ever manufactured. I just hope that Ruger will make 41 Magnum with 6-7.5 inch barrel. I will keep one 357 Magnum S&W 686 and one 44 magnum Bisley, but my primary revolver will be longer barrel GP100 in 41 Magnum.
 

Yankee_Papa

Bearcat
Joined
Mar 24, 2006
Messages
54
Location
Southwest NH
OP here - I've settled on a load that is very accurate in my GP100 44 Special:

240 gr LSWC (Lee tumble lube mold, Prismatic powder coat)
7.0 gr Unique
CCI #300 primer
OAL 1.465"
Starline brass
Lee Factory Crimp Die 1/2 turn

I haven't chrono'd it yet.
 

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Jon406

Bearcat
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NW Montana
For those wanting to learn about the 6 O'clock forcing cone cracks you can read about it here....
Senior product engineer Richard L Baker used to work for Ruger prior to his going over to Smith & Wesson
and possibly see why there is a similarity between the Ruger GP100 and the S&W mod 586/686 L frames
 

Yankee_Papa

Bearcat
Joined
Mar 24, 2006
Messages
54
Location
Southwest NH
For those wanting to learn about the 6 O'clock forcing cone cracks you can read about it here....
Senior product engineer Richard L Baker used to work for Ruger prior to his going over to Smith & Wesson
and possibly see why there is a similarity between the Ruger GP100 and the S&W mod 586/686 L frames

Thanks. I learned something. It's now easy to understand why I should keep my loads for the 44 Special down and not venture into +P, and to use longer, heavier bullets. Before reading this article, people would simply tell me "buy a 44 Mag" but they never said why. Maybe they didn't know about the barrel flat and hoop strength and were just parroting "buy a 44 Mag". I don't listen to people who can't/won't tell me "why".

You told me why. Thank you.
 
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Joined
Sep 25, 2008
Messages
91
Location
SC
It amazes me that people will a buy a gun then try to turn it into something it isn't. For those that do they deserve the results. I have 38's & 357's 44 spl's and 44 magnums......... Each is loaded to what it is. No more. No less. .If you need more horsepower.......GET A BIGGER GUN.

BTW My standard 44 special load is my cast 250 gr bullet pushed by 7.5 grs. of Unique.
 
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