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Very Hot Topic (More than 25 Replies) Trapdoor Action (Read 1869 times)
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Trapdoor Action
Dec 6th, 2024 at 8:46am
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Attended a local gun show last weekend and saw several unusual custom rifles. Builder started with 1884 Trapdoor action, 30 inch Green Mountain Barrel, Hawkins style stock, tang site, 45-70 and workmanship was impressive. 
I've always thought Trapdoor action is on the weaker side for single shot rifles is this true?

Other custom rifle was a large Martini Military Rifle refinished, ok but not interesting.
  
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Longknife
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Re: Trapdoor Action
Reply #1 - Dec 6th, 2024 at 9:05am
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Its "HAWKEN" Grin.   There have seen many trapdoor Hawken  copies made. Even some commercially made ones. Supposed to copy the work of JP Gemmer, who took over the Hawken shop. 1862-1915. I wouldn't use anything bigger than a 45-70 in the action, IMHO! ,,,LK
« Last Edit: Dec 6th, 2024 at 9:21am by Longknife »  
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jhm
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Re: Trapdoor Action
Reply #2 - Dec 6th, 2024 at 9:16am
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The trapdoor was in 45-70 originally. If you shoot rounds loaded for the trapdoor you are ok. You just can't hot rod them. Shoot them as intended and you are good. I have seen others built on a Gemmer or Hawken build and they look nice.



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SchwarzStock
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Re: Trapdoor Action
Reply #3 - Dec 6th, 2024 at 11:46am
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I would not hesitate a bit if offered a nice Gemmer style Trapdoor in 50-70 Grin
  

If your rifle is not in 7.62 and you can't hit what you are aiming at with de-linked machinegun ammo you are a pretender.
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oneatatime
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Re: Trapdoor Action
Reply #4 - Dec 6th, 2024 at 5:10pm
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I had a 68 Trapdoor in its original 50-70 with a mirror bore and it shot as good as it looked. Wasn't the 30-40 worked up in a slightly beefed up Trapdoor by the arsenal? On the other end I once traded a $15 dollar rifle for a Trapdoor rebarreled in 32-20.
  
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westerner
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Re: Trapdoor Action
Reply #5 - Dec 6th, 2024 at 5:32pm
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I know of a custom 45-90 trapdoor. With a false muzzle!
  

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marlinguy
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Re: Trapdoor Action
Reply #6 - Dec 6th, 2024 at 5:37pm
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I've often thought about building up a custom Trapdoor action in a smaller cartridge like .38-55 or .32-40. Thought they would make a neat custom rifle, and the action would be plenty strong for most loads in the two cartridges.
  

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TN Longhunter
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Re: Trapdoor Action
Reply #7 - Dec 6th, 2024 at 7:47pm
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I have a TD carbine, modified by a turn of the century (1900) that he sleeved. Marked “30 WCF” (30-30). I shoot cast and mild loads.
  
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Tom_Trevor assra life no.71
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Re: Trapdoor Action
Reply #8 - Dec 6th, 2024 at 8:55pm
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The long range trapdoors were 45-80-500. I have shot mine with no problems.
Somewhere on line is a magazine article we did with C. Rodney James for Guns Illustrated annual in 1986 trying to blow up a trapdoor rifle which took some doing to accomplish.
  
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jhm
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Re: Trapdoor Action
Reply #9 - Dec 6th, 2024 at 9:00pm
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I built one up in 40-50 SBN that I shoot a 300gr RCBS bullet with 4198 and get good accuracy.





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ndnchf
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Re: Trapdoor Action
Reply #10 - Dec 7th, 2024 at 6:49am
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I've always thought a Gemmer style conversion of a .50-70 US model 1868 Springfield trapdoor would be an awesome and realistic rifle.
  
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boats
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Re: Trapdoor Action
Reply #11 - Dec 7th, 2024 at 7:23am
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Long time fan of Trapdoors, owned Full size, Cadet & Carbines competed with the Cadet mostly, planned to build a replica of period Springfield Arsenal built Trapdoor Creedmore style rifle.  Switching to CPA’s never did it. Don’t take any of this as fact, could be things to further look into.

Couple things I considered. Best to build on the 45/70 case head size, 40/65, 45/90. No action alterations needed and pressures similar to 45/70. My plan, the 45/90

Significant change adding a tang to mount a sight. The Buffington is a handicap. Changing front sight simple.

Trapdoor locks can be tuned  for “good” trigger pull, they are smooth but heavy. Sear spring alteration cures weight. Converting top set trigger may be possible but complicated. Did not consider switching to set.

Without looking through my gun books recall the Arsenal competition rifles used a Lee Magazine rifle stock. Higher comb flat buttplate. Both needed.  

At the time, 30 odd years ago, Springfield Arsenal museum would make originals available for hands off study & photography by appointment. Obscure information again from memory,  “Bull Barrel” came from the Arsenal armorers name, he built the match rifles. Please correct if otherwise 

Boats
« Last Edit: Dec 7th, 2024 at 7:37am by boats »  
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Re: Trapdoor Action
Reply #12 - Dec 7th, 2024 at 7:53am
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Thanks to all, I'm still learning about single shot rifle.
Recently enjoyed article about Highwalls in our Journal and drawing illustrating the difference between Stevens 44 and 
44 1/2 posted on this webpage.
  
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Deadeye Bly
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Re: Trapdoor Action
Reply #13 - Dec 7th, 2024 at 8:47am
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Trapdoor Gemmer rifles with octagon barrels are what most are building these days. I believe I once read that there is only one known specimen of an original made by Gemmer with an octagon barrel. All the others he did used the original round barrel.

I agree with ndnchf that a '68 in 50/70 would be an interesting conversion. I've got a good '68 action and lock that would be perfect.
  
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Re: Trapdoor Action
Reply #14 - Dec 7th, 2024 at 11:15am
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Weren’t the first Trapdoors chambered in 50-70?  Of course back then it could only have been a black powder load and pressures wouldn’t have been but so great.
Speaking of pressures, it’s worthy of note that when loading data is published for the 45-70, there are always two or usually three power levels listed with the lowest always listed for Trapdoors etc.  Aren’t even the Rolling Blocks a little stronger?
Like my friend boats, back when I was young and still could seriously dream of building a wide variety of guns, I dreamed of a 50-70 Trapdoor with a Gemmer or Hawken style Sporter stock. Just one more project I never got around to!  Undecided
Froggie
  
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