Okay I need some information. I have a Springfield model 1873 Infantry version. I'm looking for a gunsmith in NJ. Also if you know of any place to get 45-70 ammo.

Hope that you are aware that trapdoor's are black powder only!  you really don't want to shoot modern ammo through a 142 year old rifle.

Actually no I wasn't. One of the reasons I'm looking for a  smith

If you reload, you can use smokeless powder to concoct .45-70 reduced loads for your Trapdoor that are equivalent to BP loads. AA5744 can be used. Google over on Handloads.com and Castboolits.com. Hodgdon online reloading data has a section for just Trapdoor's. I'm pretty sure there was a section in my Hornady and Speer reloading manuals too.

Thank you

I am not sure where you are located but Banger's Sport Shop in Winslow, NJ does a lot of gunsmithing. I would give them a call their phone number is 609-561-1717 and ask to speak to Chuck who is the owner. I hope this helps!

http://bangerssports.com/

I recently acquired a trap door as well, It looked like cowboy action ammo would be the right load since I don't reload yet. I do want it looked over before heading to the range. Any gunsmiths further North?

 

TC