Coehorn

Discussion in 'Cannon' started by Gun Tramp, Jul 9, 2019.

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  1. Jul 9, 2019 #1

    Gun Tramp

    Gun Tramp

    Gun Tramp

    32 Cal

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    010.JPG
    This is a Hern full-scale Coehorn mortar I put together a number of years ago, 2 1/4" bore. The cart has no historical basis but since the other three crewmen were two dogs and a cat I needed a way to move it around. Dixie sells these castings with the vent drilled (oversize unfortunately) but this tube and its bed ironwork came from Hern and a puzzled machinist here drilled the vent to correctly accept friction primers. The casting was finished slightly by hand (no grinder) and browned; the bed is ash, colored by linseed oil and paste wax and time. A tin can mould produces plaster-of-Paris slugs that are propelled by 1 oz. of 1F and can occasionally be seen in flight. Sometimes they can be reused; a neighboring settler who was picking rocks in his adjacent field returned one to me, unsmiling, "I bet this belongs to you."
     
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  2. Jul 15, 2019 #2

    FiremanBrad

    FiremanBrad

    FiremanBrad

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    I want one!!!!
     
  3. Jul 15, 2019 #3

    dave951

    dave951

    dave951

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    Come on over to the North South Skirmish Association where we shoot these live in competition.
     
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  4. Jul 17, 2019 #4

    Gun Tramp

    Gun Tramp

    Gun Tramp

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    Brad, plans for the coehorn are available from both vendors I mentioned and would be an affordable start; an enterprising fellow might fabricate the ironwork himself.
    Dave, I get a great big grin when I consider there are guys around who develop loads for accuracy with these. I have much to learn. How does one determine the "correct" projectile weight?
     
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  5. Jul 17, 2019 #5

    dave951

    dave951

    dave951

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    That's a question for the mortar experts over on the North South Skirmish Association board.
     
  6. Jul 17, 2019 #6

    Treestalker

    Treestalker

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    Hello, Gun Tramp, that is a beautiful job on the Coehorn.
     
  7. Jul 17, 2019 #7

    Gun Tramp

    Gun Tramp

    Gun Tramp

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    Thank you for the kind words, Treestalker. One of my better efforts.
     
  8. Jul 26, 2019 #8

    FiremanBrad

    FiremanBrad

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    Lets see a video!!!!
     
  9. Jul 26, 2019 #9

    Blogman

    Blogman

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    Ditto!
     
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  10. Jul 26, 2019 #10

    dave951

    dave951

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    Alrighty Tramp, we, of the NSSA, are hurling the gauntlet right now. Come to Winchester and see just how much starch ya gots in yer drawers with our mortar boys.
     
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  11. Jul 28, 2019 #11

    Terry Jack

    Terry Jack

    Terry Jack

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    Very nice! I can imagine how fun it is to shoot!
     
  12. Jul 30, 2019 #12

    trent/OH

    trent/OH

    trent/OH

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    Give your neighbor the chance to shoot it a few times, and he'll be smiling when he fetches a projectile home!
     
  13. Aug 12, 2019 #13

    EC121

    EC121

    EC121

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    I have a 2" Coehorn with a homemade plywood carriage(no wheels). No idea what the scale is. Says "Barnie's Blasters" on the casting. Haven't shot it in years. A 4oz. juice can full of cement worked fine. Wadded it with bread or old biscuits. I put a loop of stainless welding rod in the cement to hold a streamer. You need to remember to wet the streamer or it will burn. As I remember it, 90gr. of 2F in the chamber would shoot it 100yds. and hit in about a 10ft. circle. Lots of fun.
     
  14. Aug 12, 2019 #14

    hanshi

    hanshi

    hanshi

    Cannon

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    I love it! That is just too cool!
     
  15. Aug 13, 2019 #15

    steam1993

    steam1993

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    100_4967_zpsbiu0rwts.jpg

    This is my full bronze coehorn mortar 5.8in bore, fires a 20 pound ball, you can see the ball on the right side. Range up to 1/2 mile(would love to have a range to do 1/2 mile), 1oz 1F black powder shoots the ball 100 yards.
     

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    Last edited by a moderator: Aug 13, 2019
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  16. Aug 13, 2019 #16

    Blogman

    Blogman

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    Only one ounce?
     
  17. Aug 14, 2019 #17

    Treestalker

    Treestalker

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    Hello, Blogman, It is amazing how little powder is needed for a mortar. You can easily push a projectile out of sight and into unknown territory before a cat can lick it's (censored).
     
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