Gamo trigger tightening up before break

I love to shoot with my CFX Royal, and granted it’s not a Weirauch, but hey, it suites me down to the ground. Though I am probably very hopeful wanting proper trigger. So following advice and with a bit of effort I got a GRT sent to South Africa, and it’s a definite improvement. Before installing it I removed the trigger return spring from the old trigger, reinserted and fired off a few rounds. I noticed was that the trigger tightens up (you need to pull it harder) just before it breaks – so much for the round catching you by surprise… I inserted the GRT and then tried again, it still tightens up as I expected. Is this unique to my gun, if not, is there a solution? A millions times better with the new trigger – but still not 100% to my liking.

[vinceb]

...do you mean that it actually gets difficult to pull, or just that you feel an increase in resistance?

[Big_Bill]

o Duncs,

If you are saying that you replaced the trigger return spring, with your GRT-III trigger ?

Please read the installation Instructions carefully.

You should NOT replace the return spring, with the GRT-III trigger, it does not need that spring to operate.

http://charliedatuna.com/GRT_III_trigger_info.htm

If you do not have your instructions handy, follow the link above for Instructions.

Sorry, maybe it was not clear, I did not put the srping back in with the GRT trigger

There is an increase in resistance.

[vinceb]

...right before the sear releases. That's the purpose of a 2-stage trigger.

The trigger is designed with a lot of sear engagement for safety reasons. The first stage removes MOST of this engagement, taking the trigger to the "knife's edge" right before firing. At that point the trigger pull effort should go up noticeably (but not drastically), so that you know that the gun is about to fire with just a little more trigger pull. That's what's meant by a '2-stage' trigger.

If you have a constant, steady resistance through the trigger's range, you effective have a single-stage.

The original Gamo trigger is really a single-stage trigger. What they CALL a 'first stage' is really just some spring-loaded slop in the trigger mechanism, it doesn't actually move the sear closer to the firing posiiton. Ditto with the Hammerli/Norica "cheap" trigger (although the mechanism is inferior to the Gamo).

[Gene_SC]

Vince, not all the Hammerli triggers are false two stage triggers.. Just thought I would add this...

Gene

Thanks, interesting stuff! I will thus just learn to shoot with it - Practise makes perfrect

[vinceb]

There's 2 Hammerli triggers (actually, they are Norica mechanisms) - the cheap one and the good one. Either one can be found on the Norica guns (or the Norica clones made by Shanghai) that are distributed under the Hammerli, and Beeman names. To the best of my knowledge, the clones sold under the Industry and TF brands are only equipped with the good trigger.

And in this case, the Chinese trigger is just as good as the Norica ones.

[Gene_SC]

Thanks Vince for clarifying that..

Gene

I just installed a GRT in a new 440, and I had to read the following part of the Installation Instrutions a few times to really understand what was being said.   In my case it did bind enough that the trigger would not spring back from the fired position.  A bit of work with a small file allowed more clearance and it all of a sudden worked smooth as silk.  The only moly lube I had around was for camshaft installs.  hope it is ok to use.  Im no expert but just on the off chance, this may be related to your CFX.  Good luck.

Tony

[Quote from CDT Site] [Note: check fat pin slot for sharp corner

After the trigger is installed, check the edge of the trigger housing where the fat pin slot is. Quite often it is bent inward just a little on the corner/edge of the slot when it is stamped out during the manufacturing of the trigger housing at the factory causing the trigger to catch or drag on it. This is soft metal and that sharp edge corner is easily filed down if needed. When the trigger is installed, the trigger will catch and drag on the bent in sharp edge if not filed down flush. Quite often I find the bottom inner edge of the trigger housing has sharp edges and I remove them also. ]