Drum help

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Hello,Last week I received a brand new 32 cal barrel made by Ed Rayl. It’s 3/4” across the flats and has a breach plug installed. I want to install a powder drum and build a percussion rifle. My question is, does anyone make a drum smaller than 7/16” diameter to fit such a small barrel? I’m going to order a Davis Goulcher lock without provision for a drum so i can file to fit. 7/16 diameter powder drums are readily available, would that look ok on this barrel? The flats of the barrel are right at 5/16”. It’s ready to draw file and finish. The stock is also on its way, I ordered a Vincent style half stock from Pecatonica, I only had them inlet the barrel channel and ramrod. I have looked and have not found much in the way of smaller powder drums. Any leads or advice is much appreciated.
 

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Any one who can run a lathe can make a drum. The problem you may run into by making a smaller one is that it will be too small to hold the nipple. I'd just install the drum you have and not worry about it being a little larger than the barrel flat. It sounds like you're starting off on a neat project.
 
I’m looking forward to getting going on it. I should have the stock in 2 weeks, I’m going to place an order today at Track for some of the little stuff. I’m going to make my own trigger guard, toe plate, side plate and such.
 
I like all the suggestions, thanks. I ordered a 1/2’ drum. I like the idea of filing a flat for the nipple and possible shaping it some.
 
Another question, what nipple size should I thread the drum for, I’d like it to be set up for nipples that are readily available. I was thinking 1/4x28. What say you?
 
Another question, what nipple size should I thread the drum for, I’d like it to be set up for nipples that are readily available. I was thinking 1/4x28. What say you?
1/4 x 28 for Thompson Center is a short shank nipple both top and bottom. They are commonly available in box stores.
 
This is an interesting project. Looking forward to following along. Must be planning on it being pretty heavy with needing casters!
 
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I see pics of lots of quality custom rifles where the edge of the drum is above the corner of the octagon barrel - where the drum meets the barrel. Looks OK to me and I'd rather have a nice thick drum with full nipple threads than a small one that is thinner.
 
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