doublegunshop.com - home Forums General Discussion DoubleGun BBS @ doublegunshop.com BSS trigger doubling solved!

Well, I've been played the fool more than once and likely it won't be the last time. I'm not bragging about it, mind you, just being realistic. Grouswoods has explained to me that he was not aware of this condition and I accept his explanation as truth. Still, the seller that used the gun before that sold it to Grousewoods from this bbs was aware of this condition. Shame on him.

I bought a BSS 20ga 26" Sporter (straight stock) off a member here who'd bought it recently from another. All looked as described, about a 90% gun with some marks and blue wear. Well, the first time out it doubles and I mean it really reliably doubles every 5th shot or so. Given the gun's price and the fact it wasn't disclosed (mystery and darkness lurk in single triggers that double, ya know), I thought this was not such a nice thing I was passed along. I could have raised a big enough stink and all and probably humbled the seller into taking it back. However, I know these guns well and have worked on the trigger of at least one in the past. So, I figure what the heck, I'll work on it when I get a chance.

I finally got a-round-tuit and diagnosed it best I could. First I was looking for anything out of the ordinary and I had another gun to compare it to. Nothing obvious at first. Then I looked for tampering from the busy fingers of a tinkerer. There it was! The part I refer to as the "disconnector" that stops the inertia weighted transfer bar from going forward until the next shot had been "polished for smoother operation" on the two contact faces (see arrow in pic). In the process, the angles had been rolled. Although I couldn't get it to slip off, I could see it was likely under recoil as compared to my factory gun.

I ordered the two components from Western Gun Parts in case the damage done would be easier if replaced. But, in an attempt to do a quicky check of my theory, I took a few swats with a diamond needle file on both surfaces and changed their angles.

Today I shot 100 rounds of field loads thru it without a hitch or double! Take THAT! You single trigger doubling demons!

Anyway, now I don't feel like I was taken too far down that primrose path. At least I got back to the start.

Wait a minute......... It doubles every fifth shot or so? Phew! I think I would have stopped shooting it after the first time it doubled. But good for you for finding the fix. And for being enough of a gentleman for not exploiting the person's name who sold it to you................By the way, it wasn't me, was it? I have a hard time remembering these things. Mad Cow, you know?...........Denny Crane

Jimmy,
I started cutting off shells and dumping the powder to put in the second chamber to test the gun further.

I dunno if it was you. I have CRS disease.

ChuckH:

Nice detective work. Is the pic before or after you changed the faces/angles?

Kind Regards,

Raimey
rse

Curing a doubling single trigger!

Does your signature line have anything to do with this?

Raimey,
you caught me. That's the 12g BSS that I used for comparison. The pic below is the 20g. The parts still look different, but the sharpness of the 12g parts caused me to look over the 20g parts closely. I did the work without disassembly since you can just pull the inertia weight back and gain access to the faces of the parts. You can see the wider flat on the rear part where the tinkerer took material off or it was just fitting by the factory. Either way, it drew me to look at the corners for rounding. Found it, fixed it in 10 mins.

Good for you, Chuck on the testing. Will this always work on any kind of gun? I thought you would have to have a full charge for the inertia to kick the action to the other trigger.

Jimmy.
Full charge on the first barrel, primer only for the second barrel. Only when you break the gun open can you tell if it doubled, by looking at the primer of the cut & emptied shell. Saves the shooter and the gun a beating. Just takes a minute to cut apart after you get the hang of it.

Just one question, why buy a single trigger sxs to begin with? In my opinion, having a single trigger is a good reason not to buy a sxs. That said, congratulations Chuck on ferriting out the doubling demon!
Steve
BTW I did have a single trigger LCS years ago that doubled and even fired spontaneously, all on it's own, even after I took it to a gunsmith for repairs. It sure turned me off to LC Smiths (though I realize it was more an isolated case, probably due to the aftermarket double trigger asembly). Still, why would someone ever replace a double trigger with a single trigger setup, I just don't understand the logic behind such a decision.

Rockdoc, if someone wants a BSS, there's a good reason to buy them with a ST: they didn't make them with DT. And generally, the BSS ST is pretty reliable.