Results 1 to 7 of 7

Thread: What Pin Gauges Do I Need For Barrel Measurement?

  1. #1
    Join Date
    Mar 2013
    Posts
    47
    Region:
    Visitor

    Question What Pin Gauges Do I Need For Barrel Measurement?

    OK, so like everybody else right now, I have too much time on my hands.

    I have a so-called 1855 Artillery Rifle - somewhat of a frankenrifle with a mix of original and (mostly) repro components. It's the barrel that is a mystery to me. It is - I believe - a very early Jencso barrel. The underside is marked "11-84 SMJ&M 024" - so I'm assuming manufacture in November 1984 and a serial/barrel number of 024. I believe "SMJ" stands for Steven M. Jencso", but not sure about the "&M" at the end. Maybe one of you can tell me?

    Anyway, the barrel has an eight-land, eight-groove bore and is very clean and new looking. I don't think it's possible that it's the original bore. Plus, it appears to me to be oversized. I'm not set up to do an accurate measurement, but my "normal" .575" - .578" Minies slip right in and are obviously too small. As best I can tell, the land diameter is at least .583" and may be larger than that.

    What size pin gauges would I need to figure out the actual bore diameter? And do any of you know of a source (maybe someone here) who could rent/loan me the needed gauges? Once (if?) we get set free out here, I would like to be ready for a range session.

    Thanks in advance and be safe in these uncertain times,

    Tom
    Attached Images Attached Images  

  2. #2
    Join Date
    Jan 2009
    Location
    Huntsville
    Posts
    3,733
    Region:
    Deep South - Georgia, Louisiana, Tennessee, Mississippi and Texas
    Travers sells them. Here is .575-.584 minus gauges. Minus gauges will fit in the hole they are marked for.

    https://www.travers.com/class-zz-ind...2&series=Minus

    They are $3.65 each.

    So, you can get a whole set for $40 plus shipping.

    Steve
    Steve Sheldon
    Commander
    4th Louisiana Delta Rifles
    NRA Certified Muzzleloading Instructor

  3. #3
    Join Date
    Mar 2013
    Posts
    47
    Region:
    Visitor

    Thanks!

    Much appreciated!

  4. #4
    Nd1887 is offline
    Team:
    Visitor (non-N-SSA Member)
    Member
    NA
    Join Date
    Apr 2020
    Location
    Fargo
    Posts
    21
    Region:
    Visitor
    I ordered 6 a couple weeks ago from Travers and 3 are still on back order but I could still figure out the bore sizing.
    3rd Great grand son of Pvt John Simon's 6th Minnesota Company E

  5. #5
    Join Date
    Jan 2009
    Location
    Huntsville
    Posts
    3,733
    Region:
    Deep South - Georgia, Louisiana, Tennessee, Mississippi and Texas
    Yes mine came in in 3 separate shippings also.

    There is a check box on the checkout that says "ship as single unit" where they will hold until all are together.

    Steve
    Steve Sheldon
    Commander
    4th Louisiana Delta Rifles
    NRA Certified Muzzleloading Instructor

  6. #6
    Join Date
    Mar 2013
    Posts
    47
    Region:
    Visitor

    Thanks again!

    Steve - got the pin gauges in today?s mail & am now all set. My Minies need to be .580?

    Thanks again for your help.

  7. #7
    Join Date
    Jan 2009
    Location
    Huntsville
    Posts
    3,733
    Region:
    Deep South - Georgia, Louisiana, Tennessee, Mississippi and Texas
    Glad you are set up!

    Could be! I had a musket once that gauged at .584! I ended up re-barreling it.

    Steve
    Steve Sheldon
    Commander
    4th Louisiana Delta Rifles
    NRA Certified Muzzleloading Instructor

Similar Threads

  1. FS: Lyman .69 Minie Mold/.58 Bore Gauges
    By wrfabus01 in forum Wanted/For Sale Items
    Replies: 5
    Last Post: 11-14-2017, 09:17 PM
  2. pin gauges
    By pastore in forum Shooting Techs, Tips, & Tricks
    Replies: 4
    Last Post: 07-28-2017, 11:35 PM
  3. For Sale--.58 Cal. Pin Gauges
    By C.W. Artillery in forum Wanted/For Sale Items
    Replies: 0
    Last Post: 11-25-2016, 05:14 AM
  4. Other types of fake ring gauges bought at shows
    By cannonmn in forum Artillery
    Replies: 0
    Last Post: 12-06-2010, 08:45 PM
  5. Need help with a measurement.
    By shilohzowie in forum Small Arms
    Replies: 1
    Last Post: 04-04-2008, 04:37 PM

Posting Permissions

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