Author Topic: Coning question  (Read 1702 times)

Offline snapper

  • Hero Member
  • *****
  • Posts: 2429
Coning question
« on: April 25, 2019, 04:48:31 AM »
I think I need to perhaps cone a barrel.  The barrel seem to  have some damaged rifling about  1/8" to 1/4" or so from the end of the muzzle.  Will a coning tool reach that far down a barrel to help clean up that rifling?

thanks

Fleener
My taste are simple:  I am easily satisfied with the best.  Winston Churchill

Offline rich pierce

  • Administrator
  • Hero Member
  • *
  • Posts: 19476
Re: Coning question
« Reply #1 on: April 25, 2019, 06:03:15 AM »
From ones I’ve seen, yes. A lot depends on what the damage looks like. How deep and so on.
Andover, Vermont

Offline smylee grouch

  • Hero Member
  • *****
  • Posts: 7901
Re: Coning question
« Reply #2 on: April 25, 2019, 06:11:17 AM »
Just curious but would a deep crown job fix it instead of a coning?

Offline drago

  • Full Member
  • ***
  • Posts: 147
Re: Coning question
« Reply #3 on: April 25, 2019, 02:49:27 PM »
What is a deep crown job? I thought it was just smoothing the end of the barrel perpendicular to the bore.

Offline smylee grouch

  • Hero Member
  • *****
  • Posts: 7901
Re: Coning question
« Reply #4 on: April 25, 2019, 03:37:31 PM »
By deep crown I mean from the end of the barrel down 1/8-1/4 and remove enough to get rid of the damage but not so far down as some cone jobs go where you rid rid of the rifling lands for an inch and a half .

Offline snapper

  • Hero Member
  • *****
  • Posts: 2429
Re: Coning question
« Reply #5 on: April 25, 2019, 04:59:35 PM »
I will try to post a picture of the rifling in a day or two.

I have no experience with coning or making a deep crown.

Fleener
My taste are simple:  I am easily satisfied with the best.  Winston Churchill

Offline Longknife

  • Hero Member
  • *****
  • Posts: 2091
Re: Coning question
« Reply #6 on: April 25, 2019, 05:07:45 PM »
Art I replied to your e-mail. I think my tool will clean up your rifling fine. Here is a pic of a barrel coned by one of my tools by a member of this forum, Steve_Rose
 

Ed Hamberg

Offline snapper

  • Hero Member
  • *****
  • Posts: 2429
Re: Coning question
« Reply #7 on: April 25, 2019, 05:52:31 PM »
That does look like it should take care of my issue.

Thanks

art
My taste are simple:  I am easily satisfied with the best.  Winston Churchill

Offline Daryl

  • Hero Member
  • *****
  • Posts: 15782
Re: Coning question
« Reply #8 on: April 25, 2019, 09:12:18 PM »
This is more like a deeper normal crown - similar to the long tapered crown.
This one shot well. I used a tapered stone meant for a drill, wrapped in 320 wet/dry paper
and just rotated it back and forth with my hand, turning the barrel now and then. The result is
perfectly centered & a bit deeper than normal - about 1/4" to full grove depth.


« Last Edit: April 26, 2019, 08:12:27 PM by Daryl »
Daryl

"a gun without hammers is like a spaniel without ears" King George V