Home | Ezine | Forums | Links | Contact
NitroExpress.com: Dented muzzle

View recent messages : 24 hours | 48 hours | 7 days | 14 days | 30 days | 60 days | More Smilies


*** Enjoy NitroExpress.com? Participate and join in. ***
You are not logged in. [Login] Main Index · Search · Active Topics
New user · Who's Online · FAQ · Calendar

Double Rifles, Single Shots & Combinations >> Building Double Rifles & Gunsmithing
Previous topic Previous   View all topics Index   Next topic Next   Threaded Mode Threaded  

Pages: 1
Beveldown
.224 member


Reged: 20/08/12
Posts: 28
Loc: Kansas City, USA
Dented muzzle
      #247939 - 27/05/14 06:54 AM

Problem with my .450 BPE double rifle. Shooting 58 to 65 gr. of H4895 behind foam backer rod and 300 grain Hawk bullets the right barrel groups nicely right to the point of aim at 50 yards. The left shoots high and right (crossing) a couple of inches regardless of the charge. Groups not as good.

The left barrel's muzzle was banged at some point prior to my owning the gun and so has a small flat spot low and left as you hold the gun, right at the muzzle. In other words directly opposite the displacement of the bullets on the target.

Measuring a cerrosafe casting and the bore as carefully as possible I believe the constriction is .003 or .004 inches.

Assuming you agree that this may be causing the crossing shots, could I possibly correct things by counter boring the muzzle maybe .060 or .070 to take out the tight spot without making the regulation worse? Suggestions on how to go about this would be welcome as well.

I should say also that the bores are counter bored around .025 deep already; diameter of the counter bores is about .510. I don't know if that treatment was original to the gun or not.

The rifle was made by James Mac Naughton in 1898 and has steel barrels.

Many thanks.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Marrakai
.416 member


Reged: 09/01/03
Posts: 3591
Loc: Darwin, Top End of Australia
Re: Dented muzzle [Re: Beveldown]
      #247941 - 27/05/14 09:20 AM

May not work in your case because of the constriction, but a .375NE Wilkes double in Darwin shot one barrel above the other by several inches, and the diagnosis was that it had probably been dropped. The Muzzles were given a gentle twist with a padded Stilson, and it now regulates perfectly. This was done knowing that if the tinning cracked, they were going to need re-regulating anyhow, so nothing to lose really. That rifle still shoots perfectly ~7 years later....

Bush gunsmiths, gotta love 'em.....

--------------------
Marrakai
When the bull drops, the bullshit stops!
--------------------------------
www.marrakai-adventure.com.au

Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Previous topic Previous   View all topics Index   Next topic Next   Threaded Mode Threaded  

Extra information
0 registered and 27 anonymous users are browsing this forum.

Moderator:  CptCurl 

Print Topic

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Topic views: 1014

Rate this topic

Jump to

Contact Us NitroExpress.com

Powered by UBB.threads™ 6.5.5


Home | Ezine | Forums | Links | Contact


Copyright 2003 to 2011 - all rights reserved