Hold a trigger stable in the receiver.

I have a new Mark X action. I installed a Blackburn trigger. The pin holding the trigger is just long enough to fit properly on both sides of the trigger housing. But it gravitates to one side or the other thereby becoming loose, which in turn causes the trigger to become unstable. NO GOOD.

What do you use to keep that pin where its supposed to be?

Are you using the 'jam screw' the binds the unit by pushing against the bottom of the receiver?

The last few Blackburn/Swift trigger units I have installed required a shim in front of the sear.

The tab machined on the trigger housing was not tall enough, so I added a .018" shim and super glued them in place. This allowed the sear to be in the proper height to clear the cocking piece to pass over the top of the sear

Without this shim then you could not get enough tension on the binding screw to hold the trigger housing tight enough

J Wisner

If you do not have the tools to knurl one end of the pin you can instead use a small sharp cold chisel to peen small lines at one end of the pin which when driven into place will stay tight and centred in the housing.

Recknagel triggers have a locking pin. Necg is the USA supplier

I was thinking (hoping) for some kind of metal tape. There is a shim on the front of the trigger and the jam screw is being used

No tape,
Something is not adding up; I have installed hundreds of 98 Mauser triggers and ain't had one fall off yet.
Using standard 3mm pins.

Its not "falling off". But it moves from side to side like it was on its way to falling off. Perhaps a threaded screw with some sort of locking nut would work to fix it. Or perhaps a longer 3mm pin that sticks out on both sides of the trigger.
I don't profess to know exactly how this trigger works, but I don't want the damn thing to disengage sometime when I put it on safety and then fire when I take it off safety.

"The last few Blackburn/Swift trigger units I have installed required a shim in front of the sear."

I got this trigger directly from Ted a few years before he sold his business to Swift.

No knowledge of this pin, but is there some reason (like rotation) that you can't use a dot of locktite on it? Blue is common but the purple stuff has an even lighter bond.

If you have the proper sized pin, and the 'jam screw' is snug against the bottom of the receiver, the pin should not move. If you still have this problem after checking pin size (diameter & L) and making sure the screw is snug against the bottom of the receiver, you need to take it to a competent gunsmith as you're not going to solve this on an internet form. Tape ain't it! Neither is Loc-Tite......

It is just a 3x12 mm pin; it does not rotate so yes, you can glue it in place, although, again, I have done hundreds of Mauser triggers (never a swift though) and never had one move. at all. I used the phrase, "fall off", for dramatic effect. So people would read it.
I recommend not using that brand of trigger. I use only Timney, or for my personal rifles, military two stage triggers. "Shim in front of the sear"; sounds fishy. I mean, strange. It also sounds patently unsafe.
Sli said it; it won't be fixed here!

Stake it into place on both ends. Or spline one end of the pin, or use a Loctite on the end(s of the pin so it can be removed w/o using heat if needed.
Thousands of 'pins' are assembled in those different ways and they stay put.
Or fit a slightly over size pin if you want to.

You can also glue small wood blocks to the inletting on either side of the trigger for a close fit so the walking pin has no where to walk too.
Go oversize and carefully inlet for a close fit.

Again, I have Never done anything special to those trigger pins and never had one fail. Or move. Or come loose. Or anything else.
Something we are unaware of going on here.

tHANK YOU TO EVERYONE WHO HAS RESPONDED.

quote:

You can also glue small wood blocks to the inletting on either side of the trigger for a close fit so the walking pin has no where to walk too.

This.

quote:

Originally posted by Kolo-Pan:
Hold a trigger stable in the receiver.

I have a new Mark X action. I installed a Blackburn trigger. The pin holding the trigger is just long enough to fit properly on both sides of the trigger housing. But it gravitates to one side or the other thereby becoming loose, which in turn causes the trigger to become unstable. NO GOOD.

What do you use to keep that pin where its supposed to be?

By it, do you mean the pin? quick fix, pean over one end just a little bit ..

sounds like the pin is unsized -- but a drop of superglue would be a hack fix

I can't see how the pin can be loose & the trigger still tight to the gun. Some thing has to be holding that trigger in place & not the pin.

quote:

Originally posted by larry miller:
I can't see how the pin can be loose & the trigger still tight to the gun. Some thing has to be holding that trigger in place & not the pin.

tHE PIN DOESN'T COME ALL OF THE WAY OUT. iT JUST GOES IN ON ONE SIDE AND OUT ON THE OTHER SIDE ENOUGH TO CAUSE A VERY WOBBLY AND UNSAFE TRIGGER

How many shots does it take for the pin to walk out?
And how tightly are you tightening the front set screw?

Purple shoe? What is going on with these? Shims? Shoes?
Post pictures. I have never installed one of these and for sure now, never will.
With a Timney, you just install the pin, tighten the sheet screw, and shoot. Forever.

EDIT!! Went back and checked, the sear was hanging up in the slot. The housing doesn’t need to be shimmed, not on this one anyway.
I forgot to check that first.
Apologies to Swift.

Makes more sense.

Possibly the OP’s problem, Kolo, check for clearance of the sear in the slot.

That was done; the clearance in the slot for the sear is adequate. The housing is too thin and it flexes when you tighten up the front set screw. I hope they are not all like this one.

To be fair the Swift unit I’ve got is steel and very strong, definitely comparable to the Recknagel.
I would be happy to have it on my rifle, but I would have to re-blue the blade as it is light plum coloured.

I would like to thank everyone who responded to this problem, And especially thank DPCD for fixing this problem. Thanks Tom for fixing my safety too. It was great to meet you.

You are welcome.