Barrels under spring tension

Post your questions or seek advise regarding gunsmithing, restoration, repairs, ballistics, etc, etc.
Commercial operations or businesses may not advertise nor appear to advertise their products or services, either directly, or indirectly by a second party, except for simple reference as a source for such products or services
Post Reply
limapapa
Posts: 9
Joined: Mon Jan 04, 2021 10:31 am
Has thanked: 5 times
Been thanked: 14 times

Barrels under spring tension

Post by limapapa »

I have a 20 ga Philly Sterlingworth (extractor)that retains spring tension on the barrels after opening. To slide a new shell in I have to manually hold the barrels down against the spring tension until they reach a hard stop, about 1/4" vertical movement at the breech face . I checked my late model Philly A grade 12 ga, and it too retains spring tension on the open barrels, but only about half as far, 1/8," and not enough to keep a new shell from seating in the chamber without holding them down against the tension. I am not enough of a gunsmith or mechanic to visualize what is happening. I dont see this as a major problem, although it is a bit of a nuisance when reloading the 20. Any thoughts would be gratefully appreciated.
Mike
Researcher
Posts: 6225
Joined: Sun Jan 07, 2007 7:18 pm
Location: WA/AK
Has thanked: 462 times
Been thanked: 2444 times

Re: Barrels under spring tension

Post by Researcher »

My father had a Parker Bros. you could open far enough to extract empties and put in new shells without quite cocking it, so when you closed it, you let the hammers down and the next time a bird flushed it was dirty looks from the dog!! My father was careful about it, but I had Keith remedy it back in the days he was still in Longview. Rather have your situation than the way that Parker was.
Share the knowledge
User avatar
Silvers
Posts: 5167
Joined: Sat Jan 06, 2007 9:28 pm
Location: Between Phila and Utica
Has thanked: 1193 times
Been thanked: 1825 times

Re: Barrels under spring tension

Post by Silvers »

Actually that's due to spring compression, not tension.

To answer your question re: AH Fox guns ..... the firing hammer(s) are cocking too early in the opening arc. That can happen for several reasons and it would take many paragraphs to explain why and also how to correct for those who might be capable. If your Fox doesn't misfire but it bothers you to push the barrels down while loading, I suggest you get it to a good Foxsmith for evaluation and fix. That's a good proven Fox man, not the "gunsmith" at the local gun store. :wink: frank
Aan
limapapa
Posts: 9
Joined: Mon Jan 04, 2021 10:31 am
Has thanked: 5 times
Been thanked: 14 times

Re: Barrels under spring tension

Post by limapapa »

Thanks Frank. That makes a lot of sense. Since it is not an ejector, the only source of spring pressure had to be the main springs. Hammers cocking early means that the mainsprings are still engaging after the hammers cock. Knowing that, I dont think it is a problem worth messing with. I can put up with the mild annoyance.
Post Reply