Whiterabbit
07-19-2016, 10:40 PM
Here's my idea:
Start with a single shot 12 ga.
Use a takeoff rifle barrel (or blank, doesn't matter). Cut a new chamber. Let's say 38 special or some other low pressure cartridge (<20 ksi!)
Barrel profile around the chamber matches a 2.5" 12 ga shell, or even a 2.5" 20 ga shell. Barrel profile in front of the chamber is pencil. At the muzzle, cut a press fit delrin donut to act as a guide and to center the insert barrel into the shotgun bore.
Pretend that extraction is not an issue (which actually, it is an issue)
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In this case, you have an insert you can drop into a 12ga single shot (handi rifle) and turn it into a 38 special, or maybe 22 hornet, or maybe even 44 special. But it's not a stub, and you could pull the insert out if you wanted to and have your unmolested 12 or 20ga shotgun back.
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Question: why wouldn't this work?
Start with a single shot 12 ga.
Use a takeoff rifle barrel (or blank, doesn't matter). Cut a new chamber. Let's say 38 special or some other low pressure cartridge (<20 ksi!)
Barrel profile around the chamber matches a 2.5" 12 ga shell, or even a 2.5" 20 ga shell. Barrel profile in front of the chamber is pencil. At the muzzle, cut a press fit delrin donut to act as a guide and to center the insert barrel into the shotgun bore.
Pretend that extraction is not an issue (which actually, it is an issue)
---------
In this case, you have an insert you can drop into a 12ga single shot (handi rifle) and turn it into a 38 special, or maybe 22 hornet, or maybe even 44 special. But it's not a stub, and you could pull the insert out if you wanted to and have your unmolested 12 or 20ga shotgun back.
---------
Question: why wouldn't this work?