+ Reply to Thread
Results 1 to 5 of 5

Thread: Mystery 50 Caliber Cartridge

Click here to increase the font size Click here to reduce the font size
  1. #1
    Contributing Member rcathey's Avatar
    Join Date
    Dec 2012
    Last On
    Today @ 02:51 PM
    Location
    St. Louis, MO Area
    Posts
    1,346
    Local Date
    09-24-2020
    Local Time
    02:00 PM

    Mystery 50 Caliber Cartridge

    Hi all.

    Looking for a bit of help on a caliber ID.

    I have an old Hopkins and Allen falling block shotgun that someone put a rifle barrel on.
    The caliber is not marked in any way.

    I picked up some Cerrosafe and this is what I came up with:



    At first I thought maybe 500 Smith and Wesson but it's too short for even that.

    Any thoughts?

  2. # ADS
    Friends and Sponsors
    Join Date
    October 2006
    Location
    Milsurps.Com
    Posts
    All Threads
    Banner AD Space Available - Click HERE to Inquire Family owned and operated since 1962, Simpson LTD is the largest collector firearms store in the Midwest. Our globally sourced inventory represents many eras, with an emphasis on World War II and our favorite firearm, the Luger, of which we typically have 2,500 in stock.  Inventory changes daily with 10,000 firearms ready to ship; along with accessories, militaria, and hundreds of book titles. We also offer appraisals, consignment services ranging from single items to full collections, and we are one of the most reliable and competitively priced import and export services available.  We do not offer parts or gunsmithing, but we have a little bit of everything else. Visit our website for more information and our new technical video series Speaking Luger, and like Simpson Ltd on Facebook for updates, previews, and more. LIMITED TIME OFFER FROM THE AMERICAN GUNSMITHING INSTITUTE: Get Immediate Online Access To AGI's NEW Armorer's Course for Glock Pistols, Covering Every Generation of Glocks, Including the Latest Model 42/43 and Double Stack Pistols for ONLY $7.00! Brian Dick ... BDL Ltd. - Specializing in British and Commonwealth weapons Chuck in Denver ... Buy-Sell-Trade .. Guns, Cars Motorcycles Your source for the finest in High Power Competition Gear. Here at T-bones Shipwrighting we specialise in vintage service rifle: re-barrelling, bedding, repairs, modifications and accurizing. We also provide importation services for firearms, parts and weapons, for both private or commercial businesses. Banner AD Space Available - Click HERE to Inquire
     

  3. #2
    Really Senior Member Sunray's Avatar
    Join Date
    Mar 2009
    Last On
    09-12-2020 @ 02:31 PM
    Location
    London, Ontario
    Posts
    988
    Local Date
    09-24-2020
    Local Time
    03:00 PM
    The 1.545" case length suggests a revolver cartridge. H&A made their falling block from 1885 to 1908 and there was a .45-70 barrel made. They apparently made some falling block rim fire rifles too. Couple of those listed on Rock Island Auctions.
    I'm thinking it might be a 19th early 20th Century home made cartridge. The S&W's rim isn't that big. You slug the barrel?
    Spelling and Grammar count!

  4. Avoid Ads - Become a Contributing Member - Click HERE
  5. #3
    Contributing Member rcathey's Avatar
    Join Date
    Dec 2012
    Last On
    Today @ 02:51 PM
    Location
    St. Louis, MO Area
    Posts
    1,346
    Local Date
    09-24-2020
    Local Time
    02:00 PM
    Thread Starter
    The barrel on this one is brand new.
    The .505" dimension came from a portion of the Cerrosafe that went down into the rifling.


  6. #4
    Advisory Panel Parashooter's Avatar
    Join Date
    Dec 2008
    Last On
    Today @ 12:20 PM
    Location
    Connecticut
    Age
    75
    Posts
    625
    Local Date
    09-24-2020
    Local Time
    03:00 PM
    Dimensions resemble the U.S. .50-45 Carbine round (based on a short .50-70 Gov't case). A bit long and ~.010" tight at the base, but not far off - especially if the .555" measurement wasn't taken right at the rear end of the chamber.

    What's the groove diameter? (Would be about .515"+ for the old .50 cal.) How many grooves?

  7. #5
    Contributing Member rcathey's Avatar
    Join Date
    Dec 2012
    Last On
    Today @ 02:51 PM
    Location
    St. Louis, MO Area
    Posts
    1,346
    Local Date
    09-24-2020
    Local Time
    02:00 PM
    Thread Starter
    That looks like exactly what it is.

    I looked at lists of cartridges on Wikipedia earlier and, not surprisingly, that wasn't on the list.

    I did manage to find one forum thread (elsewhere) where a fellow had rebarelled one of these into 50-70...so people were doing stuff like this.

    Interesting little rifle made more interesting by knowing the caliber. Thanks for the help!

+ Reply to Thread

Similar Threads

  1. sub caliber adopter for Soviet 5,45x39mm cartridge
    By RCS in forum Soviet Bloc Rifles
    Replies: 7
    Last Post: 04-20-2017, 12:41 PM
  2. .58 caliber
    By A. F Medic in forum Black Powder
    Replies: 28
    Last Post: 10-15-2013, 05:17 PM
  3. Lake City Cartridge, Caliber .30, M2, Ball
    By The Wizard in forum Ammunition and Reloading for Old Milsurps
    Replies: 9
    Last Post: 04-22-2013, 02:17 AM
  4. sub caliber or chamber inserts or auxilary caliber
    By RCS in forum The Watering Hole OT (Off Topic) Forum
    Replies: 2
    Last Post: 08-08-2011, 09:42 PM
  5. MAS caliber
    By garra in forum Milsurps General Discussion Forum
    Replies: 10
    Last Post: 03-06-2010, 07:01 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts