Anyone got plans for a homemade capper for musket caps

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jh45gun

40 Cal.
Joined
Jul 9, 2004
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I had some extra nipples here that are for musket caps. Thjey also go into the breech plug farther then most. So I bought some musket caps and put one of the nipples on my underhammer. Thought I would give them a try. Since my underhammer is made in a fullstock and I have a inspection hole in the side of the stock to cap the gun I need a capper for these. Any one have any plans for a capper for musket caps?
 
I've seen a drawing some time back of a piece of medium thick leather with holes punched around the perimeter the size of the caps. Make a small slit from the hole to the exterior and you have a capper from scrap.
 
Yep- I use a strip of tooling leather, maybe 3" long and a 1/2" wide- holds around ten caps. If you leave the caps in a long time the leather turns the metal green.
 
I'd hesitate to use a longer than normal nipple on the underhammer style lock. The nipple actually goes into the chamber, and fouling on the exposed threads can make it difficult to remove the nipple. And there is the possibility of damaging the threads in the barrel.
I'm sensitive to this 'cause I once used Autolite plugs in a VW. Four helicoils later I decided to go back to the Bosch plugs. :redface:
 
Sorry I was not clear on this. Threads are the standard length. What is longer is the part the goes into the breech plug and it has a hole on the end and on the sides so more flame can exit the nipple. So I do not think the threads are an issue. I have some scrap leather around here so I will try a piece and see. What I will do is make an oblong strip with a cap on each end. might have to put a strip of wood, metal or something to keep it stiff up to the hole that the cap fits in.
 
With all due respect, I can't see any need for using a musket cap on a underhammer gun, unless you are trying to load it with something other than Black Powder. Is that what you are doing? Trying to ignite one of the substitute powders?

The very short distance between the percussion cap and the powder charge in the barrel in a direct fire ignition system like an underhammer( the other is the side hammer, a/k/a " Mule Ear ") requires only standard caps for ignition. Only when you are dealing with Slug Guns- Large caliber barrels shooting bullets, often heavy and paper patched, on top of huge charges of Black Powder is there a need for a hotter cap. The Slug Gun guys use a modern small pistol primer held in a special device that screws into the barrel in place of a standard nipple. They also have no use for a Large, Magnum Rifle Primer, the equivalence of that Musket Cap, in their underhammers guns.
 
Just thought as long as I had them I would use them. I know a standard cap worked fine. Guess I will take them back and get standard caps and no I am using Goex 3F I am done with the subs I went black to black.
 
Since I will not be using the musket caps I will not need to make a capper I have one for the standard 11 caps.
 
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