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Jul 28th, 2025
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Joined: Sep 2006
Posts: 157 Likes: 2
Sidelock
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OP
Sidelock
Joined: Sep 2006
Posts: 157 Likes: 2 |
I picked up a 10 gauge Remington Model 1878 Whitmore lifter for a reasonable price, considering condition. I believe it is called a Heavy Duck Gun and it is pretty massive. It has been cut to 20", so I thought it might make a neat and occassional Cowboy Action gun - maybe a final stage closer for effect. Wood could use an overall cleaning and refinishing. Perhaps a good winter project. It has steel barrels, tight lockup and bores with some light to moderate pitting. The most egregious cosmetic problem is that it has areas of rather deep pitting on the outside of the barrels beginning about 1.5" forward of the forend. The steel in the breech area is very thick and I wonder about shooting this with light to moderate black powder shells. I purchased some shells for another 10 gauge that are loaded with 100 gr FFG and 1.25 oz 7.5 shot. Any thoughtful thoughts on shooting this? Can the exterior pitting be polished down without affecting strength of barrels?
(Sorry for earlier typo that had 1.75 oz shot! Brain fart.)
Last edited by Rudybollo; 11/30/09 03:34 PM.
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Joined: Jun 2007
Posts: 329 Likes: 14
Sidelock
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Sidelock
Joined: Jun 2007
Posts: 329 Likes: 14 |
Hi Rudybollo have you got some pictures of the pitting?
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Joined: Sep 2006
Posts: 157 Likes: 2
Sidelock
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OP
Sidelock
Joined: Sep 2006
Posts: 157 Likes: 2 |
Hi Rudybollo have you got some pictures of the pitting? I do, but do not know how to put pics in posts on this forum.
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Joined: Jun 2007
Posts: 329 Likes: 14
Sidelock
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Sidelock
Joined: Jun 2007
Posts: 329 Likes: 14 |
Send a pm and I will give you my email address, send some pictures then
Last edited by barrel browner; 11/30/09 05:02 PM.
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Joined: Sep 2006
Posts: 157 Likes: 2
Sidelock
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Sidelock
Joined: Sep 2006
Posts: 157 Likes: 2 |
Send a pm and I will give you my email address, send some pictures then PM sent.
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Joined: Jan 2002
Posts: 2,752
Sidelock
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Sidelock
Joined: Jan 2002
Posts: 2,752 |
Downbore pressures are substantially lower than breech pressures. Somewhere I have a copy of the famous DuPont pressure curve which shows that barrel pressures at 14" are about 500 psi and rapidly falling.
A barrel would have to be thin indeed to have problems with such pressures.
Someone else may have the pressure chart, or i can dig around and find it.
My take- if the barrel is otherwise sound, and you still have more than 10 thou thickness after striking the pits- go for it.
Remember, of course, that blackpowder pressures are EXACTLY like smokeless powder pressures. The barrel doesnt care how the pressure is achieved.
Regards
GKT
Texas Declaration of Independence 1836 -The Indictment against the dictatorship, Para.16:"It has demanded us to deliver up our arms, which are essential to our defence, the rightful property of freemen, and formidable only to tyrannical governments."
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Joined: Jan 2006
Posts: 9,862 Likes: 505
Sidelock
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Sidelock
Joined: Jan 2006
Posts: 9,862 Likes: 505 |
Not corroborating, just helping 
Last edited by Drew Hause; 12/01/09 08:12 PM.
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Joined: Sep 2006
Posts: 157 Likes: 2
Sidelock
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Sidelock
Joined: Sep 2006
Posts: 157 Likes: 2 |
Thanks Greg and Drew. That is a very useful graphic.
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