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Building percussion lock 12 gauge

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Unless you are an expert with soldering and machine work I would never attempt a double. I just finished a scratch single barrel English Sporting 12 ga. and i I am just starting to build another one in a 20 ga. That is all I want. I looked at making a double and no thanks.
I am not an expert, but I am a machinist. I do a lot of fabrication as well. I have soldered a lot too. I’m
 
I am not an expert, but I am a machinist. I do a lot of fabrication as well. I have soldered a lot too. I’m
I knew I had pics of 1 of Ken's build.

He volunteered for 4H for 2 decades, building the guns, donating the powder, shot, caps etc for kids to shoot trap and skeet.

Screenshot_20230213-013138_Samsung Internet.jpg
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Everything I have ever done has been the things people told me were too hard. Started with everyone telling me not to take apart transmissions and modify/repair them myself. Slowly, that lists keeps growing. I’m up for the challenge. I will start with a single first though.

Not gonna lie, you guys have made it sound like it’s not fun.
WRONG!!! When it is a challenge it is a lot more fun. I think building a double rifle would be a lot of fun. Problem comes with the regulation. It is not that hard, but is very time consuming. I would have trouble with it because I live in town. The shooting range is 30 miles away. That is not going to work. If I could shoot in the back yard then building a double rifle would be possible.

I am not an expert, but I am a machinist. I do a lot of fabrication as well. I have soldered a lot too. I’m
I am not a mchinist and proved it this weekend. Made a big mess of a milling job on a small modern rifle project. Oh well. It is not so bad that I cannot make it work. And I got it on video!
 
Everything I have ever done has been the things people told me were too hard. Started with everyone telling me not to take apart transmissions and modify/repair them myself. Slowly, that lists keeps growing. I’m up for the challenge. I will start with a single first though.

Not gonna lie, you guys have made it sound like it’s not fun.
I,too, tend to ignore naysayers.
 
WRONG!!! When it is a challenge it is a lot more fun. I think building a double rifle would be a lot of fun. Problem comes with the regulation. It is not that hard, but is very time consuming. I would have trouble with it because I live in town. The shooting range is 30 miles away. That is not going to work. If I could shoot in the back yard then building a double rifle would be possible.


I am not a mchinist and proved it this weekend. Made a big mess of a milling job on a small modern rifle project. Oh well. It is not so bad that I cannot make it work. And I got it on video!
Regulation? You mean time regulation, or legal regulations?

I planned on using the newer technology like bore lasers and all the other tools available for sighting in. This would allow me to get the barrels pretty close without shooting them. Am I missing something?

When I build a double I will make sure to have bore lasers in and line them up at various distances before soldering them in place. That’s how over and under cartridge shooters do it with their expensive competition guns, before they go to the club. They have the ability to adjust barrels with just a screw. I would like to make something similar on my muzzleloading sxs one day. May be a pipe dream.
 
There is about a bazillion SXS and single barrel shotguns for sale at RIACO for the next 4 days. Percussion, flintlock and cartridge from 4 bore to 410. I was at the viewing today, lots of good shotguns.
 
Regulation? You mean time regulation, or legal regulations?

I planned on using the newer technology like bore lasers and all the other tools available for sighting in. This would allow me to get the barrels pretty close without shooting them. Am I missing something?

When I build a double I will make sure to have bore lasers in and line them up at various distances before soldering them in place. That’s how over and under cartridge shooters do it with their expensive competition guns, before they go to the club. They have the ability to adjust barrels with just a screw. I would like to make something similar on my muzzleloading sxs one day. May be a pipe dream.
Yes, you are missing something. With a side by side smoothbore the bores are offset from the centerline of the gun. Recoil is going to push it off to the side slightly as the ball goes down the barrel. So even if the barrels point in the same direction they will shoot to different places. With a rifle you get rotation also. When the ball spins one way, the barrel wants to spin the other. Of course it is just a small amount but it is enough to throw it off a bit. With the barrel offset from the center it is going to make each side go off to different directions. That is why it can be so hard to get double rifles to work. Getting the barrels lined up perfectly is not the solution. With shotguns it does not matter so much. Smoothbores will be easier than rifles and big calibers will off more than small ones.
I have never built a double barrel gun. This is how it was explained to me.
 
Regulation? You mean time regulation, or legal regulations?

I planned on using the newer technology like bore lasers and all the other tools available for sighting in. This would allow me to get the barrels pretty close without shooting them. Am I missing something?

When I build a double I will make sure to have bore lasers in and line them up at various distances before soldering them in place. That’s how over and under cartridge shooters do it with their expensive competition guns, before they go to the club. They have the ability to adjust barrels with just a screw. I would like to make something similar on my muzzleloading sxs one day. May be a pipe dream.
There is a book called “ Building Double Rifles on Shotgun Frames. It covers how to regulate the barrels. It is time consuming but he explains why it works. He says the laser bore sighters are a waste of time.
 
Buy "RECREATING THE DOUBLE BARREL MUZZLE LOADING SHOTGUN" by William R. Brockway. It's about the only way to figure out how to build a SXS shot gun . I used it as a guide when I was building them. For single barrels look at hawken rifles, they are breeched about the same way.
Google "English shot guns" Also "Nock Breech" or "chambered breech". Look at Rock Island auction Co and look at their past auctions.
SXS flint gun made with damascus cartridge barrels
I shot with Mr. Brockway back in the day in Baton Rouge. His shotgun was a percussion O/U, using modern Marlin 12 ga barrels and a boxlock action with strikers he built himself. Stock was fabulous figured walnut. Never heard of a side by side of his.
 
I shot with Mr. Brockway back in the day in Baton Rouge. His shotgun was a percussion O/U, using modern Marlin 12 ga barrels and a boxlock action with strikers he built himself. Stock was fabulous figured walnut. Never heard of a side by side of his.
I would love to make a percussion over and under, but figured there were laws pertaining to an over and under because it could be easily altered to fire cartridges? This is just an assumption of mine.
 
I would love to make a percussion over and under, but figured there were laws pertaining to an over and under because it could be easily altered to fire cartridges? This is just an assumption of mine.
Strictly a muzzleloader. Has solid breechplugs, barrels don't move, no way to make it take cartridges.
 
I would love to make a percussion over and under, but figured there were laws pertaining to an over and under because it could be easily altered to fire cartridges? This is just an assumption of mine.
Not trying to start an argument or anything but how do you figure that an over and under is easier to convert to cartridge than say a single shot? I'm thinking of the trapdoor as an example.
 
Not trying to start an argument or anything but how do you figure that an over and under is easier to convert to cartridge than say a single shot? I'm thinking of the trapdoor as an example.
Because an over and under has firing pins that strike a cartridge in the center of the barrels. I assumed you could swap the barrels to ones that don’t have breech plugs and be ready to go. Keep in mind, I’m not experienced with muzzleloaders like you guys are, so I don’t know if a muzzleloader o/u has hammers to strike a cap, or if it has pins that are inline and its cocked by opening the action. My Remington ml takes #11 primers, but has a bolt and an inline firing pin, so I guess I just answered my own question.

I’m just starting out, so please forgive my lack of experience.
 
Because an over and under has firing pins that strike a cartridge in the center of the barrels. I assumed you could swap the barrels to ones that don’t have breech plugs and be ready to go. Keep in mind, I’m not experienced with muzzleloaders like you guys are, so I don’t know if a muzzleloader o/u has hammers to strike a cap, or if it has pins that are inline and its cocked by opening the action. My Remington ml takes #11 primers, but has a bolt and an inline firing pin, so I guess I just answered my own question.

I’m just starting out, so please forgive my lack of experience.
 
Over the years I have restocked 2 percussion doubles and 1 exposed hammer breechloader. Be prepared for a lot of hard work and lots of time spent. It's not hard to see why double barrel muzzleloaders start at 2500 dollars.
Two of the guns were repro's that had broken stocks and the breechloader was an antique.
 
Two of the guns were repro's that had broken stocks and the breechloader was an antique.
I wonder why there aren’t more commercially available and affordable muzzloader shotguns like there are rifles. Seems strange to me. Good work on saving them!
 
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