Modding BSA Lightning XL trigger

[Shedder]

The trigger is shite, try talking to Welsh Willy.

Gus

Is that a technical term in welsh then?

[Aussiethunder]

I dont know if the trigger set up is different in the GRT to the standard lightnings but I'm currently in the middle of restoring and modding a lightning. I've taken out the 2 stage trigger( it's been polished) and replaced it with a older model trigger that is a straight pull (no little spring spring) I've ground 0.15mm of the end and ever so slightly changed the angle of the sear also I slightly bent the big spring to take a little tension out. The original trigger is to far back for my technique and trigger pull so I've welded a 4mm drill about 10mm forward of the original trigger to make a straight trigger, I tested it today and when it's adjusted to it's lightness it is a hair trigger.. It is that light that I bumped it and it went off.. But 1 and a quarter turns of adjustment it is lovely, If I can borrow a set of fishing scales I'll test it. when we get a laptop I'll post some pics.
I also put a blob of weld on the back of the saftey latch, then ground and polished the weld blob till I was happy with the amount of pressure needed to flick the saftey on and off ( no more wobbly saftey latch)
It did takes ages with alot of trail and error to get it to this stage..

[junglie]

I found shimming the side play out of them & de-burring & polishing helps a lot & correct adjustment. Every one I've worked on has had the adjuster allen screw wound right in which makes a bad trigger even worse. I actually shot one of my best 10 shot 15m groups with opens using an old tatty brum built supersport I'd tuned the trigger on.

[Hangtight]

This is what's going in instead of the nasty plastic item.

http://charliedatuna.com/GRT-4G.htm

It should bring the pull weight down from about 5lb to 1 1/2lb or so, as well as improving the break.

[hwtyger]

Weird, I had a spring Lightning XL, about 6 months old now, and it had a very good trigger. No need for any fiddling.
Dunno wether BSA uses the Gamo trigger. Mine didnt, very obvious.

[Gwylan]

Weird, I had a spring Lightning XL, about 6 months old now, and it had a very good trigger. No need for any fiddling.
Dunno wether BSA uses the Gamo trigger. Mine didnt, very obvious.

Perhaps I'm being a bit harsh, the newer ones are better, just not as good as the Rekord, or CD.

Gus

[POK!]

This new trigger is essentially the old Gamo trigger in a new chassis, that's why with minor modification or removal of safety the CDT type trigger upgrades drop right in.

[sbd]

...of all, welcome Hangtight excellent first posts, I suspect you are a prime candidate for "getting the bug" and joining our band of inveterate fiddlers... sorry "tuners" BTW have you tried adjusting the trigger weight?

At a slight tangent, on the BSA Supersport which is a forerunner of the Lightening and pre Gamo there's a mod you can do that converts the single stage unit to a faux two stage. I'm not 100% sure but I think it's as blade replacement from the Goldstar range, mine was done by SFS for the grand sum of £9. It's not a Rekord but it's quite good