Parker Gun Collectors Association Forums  

Go Back   Parker Gun Collectors Association Forums Parker Forums General Parker Discussions

Notices

Reply
Thread Tools Display Modes
What Causes Doubling?
Unread 06-01-2023, 05:54 PM   #1
Member
Bill Jacobs
PGCA Member

Member Info
 
Join Date: Apr 2019
Posts: 36
Thanks: 134
Thanked 32 Times in 18 Posts

Default What Causes Doubling?

What might cause a Trojan 12 ga to double fire?

Bill Jacobs
Bill Jacobs is offline   Reply With Quote
Unread 06-01-2023, 07:02 PM   #2
Member
B. Dudley
PGCA Lifetime
Member
 
Brian Dudley's Avatar

Member Info
 
Join Date: Aug 2011
Posts: 10,550
Thanks: 476
Thanked 17,423 Times in 4,595 Posts

Default

Dirty action. A wear sear spring. Hammer sear or notch wear.
__________________
B. Dudley
Brian Dudley is offline   Reply With Quote
The Following 4 Users Say Thank You to Brian Dudley For Your Post:
Visit Brian Dudley's homepage!
Unread 06-01-2023, 07:34 PM   #3
Member
Dean Romig
PGCA Invincible
Life Member
 
Dean Romig's Avatar

Member Info
 
Join Date: Dec 2008
Posts: 31,563
Thanks: 35,444
Thanked 33,042 Times in 12,322 Posts

Default

Whatever it turns out to be, if by disassembling and cleaning the action, it continues to double, it needs to go to a gunsmith experienced in classic sxs’s.





.
__________________
"I'm a Setter man.
Not because I think they're better than the other breeds,
but because I'm a romantic - stuck on tradition - and to me, a Setter just "belongs" in the grouse picture."

George King, "That's Ruff", 2010 - a timeless classic.
Dean Romig is online now   Reply With Quote
The Following User Says Thank You to Dean Romig For Your Post:
Unread 06-01-2023, 08:22 PM   #4
Member
Aaron Beck
PGCA Member

Member Info
 
Join Date: Jan 2021
Posts: 291
Thanks: 52
Thanked 197 Times in 120 Posts

Default

Ill admit that I have occasionally experienced this and it was the operator. Gloves, heavy loads, poor gun mount or whatever and your finger can just brush back. Bamm.
Aaron Beck is online now   Reply With Quote
Unread 06-01-2023, 09:03 PM   #5
Member
Billy Gross
PGCA Member

Member Info
 
Join Date: Feb 2013
Posts: 287
Thanks: 4
Thanked 172 Times in 67 Posts

Default

I have had an experience with a loose gun mount on a K-80. The butt bonces off my shoulder effectively causing a second pull. Both barrels go off almost simultaneously. Technically that is not doubling. Billy
Billy Gross is online now   Reply With Quote
Unread 06-02-2023, 07:42 AM   #6
Member
Stan Hillis
PGCA Member

Member Info
 
Join Date: Oct 2015
Posts: 1,694
Thanks: 3,143
Thanked 3,898 Times in 1,112 Posts

Default

Very doubtful that his Trojan has a single trigger. Involuntary (secondary) pull doesn't happen with double triggers. If it does though, there's a chance that could be causing it. With double triggers, it's dirty, or has a mechanical issue, almost certainly, as per Brian.
Stan Hillis is offline   Reply With Quote
The Following User Says Thank You to Stan Hillis For Your Post:
Unread 06-06-2023, 11:15 AM   #7
Member
Bill Jacobs
PGCA Member

Member Info
 
Join Date: Apr 2019
Posts: 36
Thanks: 134
Thanked 32 Times in 18 Posts

Default

I disassembled and cleaned the gun thoroughly. Did not see any mechanical damage. When I reassembled it and test fired it, I could not get it to double with RST shells. I am not sure what ammunition the owner was using in it. He could have easily used 2 3/4 inch shells. This gun has short chambers and should use 2 1/2 inchers. I will let him know that.

Bill Jacobs
Bill Jacobs is offline   Reply With Quote
Unread 06-06-2023, 12:37 PM   #8
Member
Mike of the Mountain
PGCA Lifetime
Member

Member Info
 
Join Date: Feb 2014
Posts: 4,703
Thanks: 15,367
Thanked 8,677 Times in 2,634 Posts

Default

I doubt that gun was chambered for 2 1/2" 12g shells. Probably for 2 5/8". If so there should be no issue shooting 2 3/4" target loads through that gun. Someone may have tinkered with the sears to lighten up the trigger pull? If so that could lead to an unsafe situation.
Mike Koneski is offline   Reply With Quote
Visit Mike Koneski's homepage!
Unread 06-06-2023, 12:56 PM   #9
Member
Researcher
PGCA Lifetime
Member
 
Dave Noreen's Avatar

Member Info
 
Join Date: Jun 2009
Posts: 3,597
Thanks: 1,617
Thanked 7,773 Times in 2,353 Posts

Default

I have a Sterlingworth pin-gun that worked fine if I fired it right/left but would occasionally double when shooting the left barrel first. When the late Bill Harvey disassembled it there was a small splinter stuck on the right sear in old, congealed oil that kept the sear from fully engaging the notch. Gave the right barrel a nice light trigger pull. The stock also had an internal crack so I had him restock it with a piece of Claro I'd been hauling around with me for a couple of decades.
Dave Noreen is offline   Reply With Quote
The Following User Says Thank You to Dave Noreen For Your Post:
Unread 06-06-2023, 03:29 PM   #10
Member
Bill Jacobs
PGCA Member

Member Info
 
Join Date: Apr 2019
Posts: 36
Thanks: 134
Thanked 32 Times in 18 Posts

Default

These photos show my 12 gauge chamber gauge. The bottom line is at 2 9/16 exactly. The next photo shows the gauge inserted into the chamber. It is indeed 2 9/16. The RST shells are about 2 1/2 inches exactly. They are fine for these guns. I really don't like to see 2 3/4 inch shells used in them.

Chamber Gauge by jakefromclemson, on Flickr

Chamber on Trojan by jakefromclemson, on Flickr
Bill Jacobs is offline   Reply With Quote
The Following 2 Users Say Thank You to Bill Jacobs For Your Post:
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:47 AM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright © 1998 - 2023, Parkerguns.org
Copyright © 2004 Design par Megatekno
- 2008 style update 3.7 avec l'autorisation de son auteur par Stradfred.