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Ive never owned a 12 gauge with 14 gauge bore in the tubes, but, have owned several that were 11 gauge. I suppose the quest was to improve the performance of ammunition that was still loaded with felt wads and an actual explosive (black powder) propellant. I believe the 12 20 concept took that to an extreme, but, have never owned one of those guns, either.
Maybe someone, here, has and can report how it works?
I think a lot of the magic bore and choke enhancements that were promoted and sold over the years were no more than marketing hype.
Best,
Ted

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and there once was a 14 gauge gun, chambered for 14 gauge shells...

http://www.dogsanddoubles.com/2013/02/the-14-gauge-no-one-ever-loved-it/


birds are gone...dogs are gone...awl we got left are the gons...
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Originally Posted By: Ted Schefelbein
Ive never owned a 12 gauge with 14 gauge bore in the tubes, but, have owned several that were 11 gauge. I suppose the quest was to improve the performance of ammunition that was still loaded with felt wads and an actual explosive (black powder) propellant. I believe the 12 20 concept took that to an extreme, but, have never owned one of those guns, either.
Maybe someone, here, has and can report how it works?
I think a lot of the magic bore and choke enhancements that were promoted and sold over the years were no more than marketing hype.
Best,
Ted


You are confusing the 12/20 with the vena contractor (probably spelt wrong).
The 12/20 was bored as a normal 12b but was lightweight due to the back action Baker lockwork, hence a 12b with the weight of a 20b. Well not quite that lite but you understand the marketing.
The vena contractor was chambered for a 12b but the bore contracted from 12b to 20b at the muzzle. Apparently is worked okay, didn't blow barrels and the recoil was acceptable. Not a success though!

I think the idea behind 12b's bored 14b was longevity: thick set of tubes bored tight had lots of wall thickness for lapping out pitting and reproof.
I may be wrong, it might have been all about what was on hand when they needed a 12b!

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I see a 12/14 Greener Police shell listed on the Rocky Mountain ammo list. Could this be the 12/14 that the thread is about?

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The 12/14 that Im aware of was a brass case with 12ga diameter base with the forward 2/3 of the case being 14ga diameter. (Think bottlenecked rifle cartridge) The idea was if a bad guy stole the Police gun there was no commercially available ammo that would fit the gun. The 12/14 was the answer to the previous idea of using a regular 14ga case. The bad guys figured out you can shoot a readily available 16ga shell in it just fine.

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No it was Lewis hammer gun

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I believe I bought the Lewis hammer gun you refer too. It didn't sell and I made an offer they took. If nothing else gauge chamber reducer inserts will be used with RST low pressure shells. the fore end has to go as well as the pad.

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Yes that was the one, I was very curious about that one! Please let us know if it really has 3inch chambers? That forend is pretty bad. I would just reshape it, at least it matches the the stock!

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The chambers gave me some thought but as I read about Lewis shotguns they did make 3 in. chambers but I dought at that time period. Its' to bad they screwed the fore arm up the stock and checkering was pretty well done. I will contact you when it comes.

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Cool, I had reservations about 3 inch chambers in the 1870s, would be curious the thickness of the barrels at the forcing. Please keep me posted! Lewis has been on the search list for awhile now!

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