Author Topic: Trigger  (Read 3505 times)

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Trigger
« on: August 23, 2006, 05:15:22 AM »
I installed my GRT-3 trigger in my 1250 last night, it's about 60% better. The trigger pull is still hard, not near as nice as my NRA1000. Does Magnum rifles have a different trigger pull? Is there anyway of lightening the pull up?

Offline Gene_SC

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RE: Trigger
« Reply #1 on: August 23, 2006, 06:18:21 AM »
John, you may have to adjust the new GRT III trigger. You should contact CDT about this. He can guide you through it. I have one on my 1250 .22 and it is nothing like any gamo trigger I have ever felt. In fact I have a new GRT III trigger on my CFX Royal .22 and it is wonderful.

Gene
THE ONES I SLEEP WITH: BSA Lightning XL, AA TX-200, AA ProSport, BSA Ultra, HW-97K, Crosman NPSS .177, FX Cyclone, HW-30 Nicle Plated, AA-S200, Crosman Marauder, CZ-634, R-9 DG, Webley/Scott UK Tomahawk, Benji Kantana, Benji Marauder, Benji Discovery.....
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Offline daved

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Re: Trigger
« Reply #2 on: August 23, 2006, 03:49:18 PM »
John,

I just installed the GTX-II from my CFX into my freinds Shadow 1000.  I really had to run the 2nd stage screw in a long way before the trigger got where I wanted it.  And yes, at first I was shocked at how heavy it was.  But keep turning it in, and it should lighten up a lot.  I was going a quarter turn at a time until it suddenly lightened up.  Then I tweaked it in tiny amounts until it was good.  If this doesn't work, call Da Tuna.  Bob's a great guy, and does amazing things.  Good luck.

Dave

Offline CharlieDaTuna

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RE: Trigger
« Reply #3 on: August 23, 2006, 05:20:15 PM »
There is something wrong with your installation provided that the trigger has not been modified and the internal springs are in the trigger are stock.. There is no difference in a magnum gun and the trigger pull should be about 1 lb 10 ounces. The second stage adjustment does not and should not need to be screwed in very far at all. It is important that you have read the installation instructions closely.

Be sure that you have removed the old original adjustment screw that sets behind the trigger. Also, be sure that the lever is seated properly in the GRT trigger slot.

If that is correct, remove the trigger and set it up from scratch.

Adjusting the second stage:

Using your adjusting tool, adjust the second stage screw to a point where you have between 4 and 5 threads showing in the lever slot and that will put you real close, then reinstall the blade. You should now be within ½ turn or less one way or the other of the adjustment span. When you are moving “pulling” the trigger and you will feel a very slight change in resistance. It’s at this point where you are at the 2nd stage adjustment span. Set the adjustment to about the center of the 2nd stage. Remember, once you are within the adjustment span you should make very small adjustments, like 1/16th or a turn at a time as the adjustment span is very quick and narrow.



Adjusting the first stage:

The 1st has been preset to accommodate most trigger internal dimensions.  You probably don’t need to touch it and I strongly suggest that you do not change it.  Proper adjustment of the 1st stage is necessary to avoid two things:

If the 1st stage screw is turned too far in (clockwise), then the safety toggle won’t work and the safety will not lock properly.

If the 1st stage is turned too far out (counter-clockwise), then the trigger blade will have too much forward travel and will have excessive free play.

Any setting of the 1st stage screw between these extremes is satisfactory and safe.  If your trigger exhibits neither of these problems, then the 1st stage adjustment is okay.  Otherwise, adjust it slowly (turning “out” if the safety won’t fully engage, turning “in” until the free play is removed) but not to the point that the safety will no longer engages and holds.

That’s pretty much it for the 1st stage.

If the trigger is installed properly it will work as designed. The complete installation instructions can be found here.

http://charliedatuna.com/MKIIGTXTrigger.htm

Thanks guys


Bob  aka:  CharlieDaTuna
Co-founder of the GTA


HOME OF THE GRT-III TRIGGER
   Website:  http://charliedatuna.com/

Home of the NPSS-NP Triggers:  
            http://charliedatuna.com/NPSS.htm

E-Mail:  CDT22@Verizon.net

Benji-342 .177 /Brazilian Winchester 800 .22 /Gamo Cadet .177 /Gamo Shadowmatic .177 /Gamo 440 .22 /Gamo Royal .22 /Gamo Whisper .177 /Gamo SK-1 .20 /B-20 .177 /TF-99 .177 /QB-78 .177 /QB-78t .22 /QB-78-(CD) .22 /QB-78-(CJ) .22/QB-78D .22 /Crosman 2240 .22 /Cros 150 .177 /Crosman Back Packer .22 ?Crosman AS 2250 .22 /Daisy Mod 93 .177 /Marksman 2004 .177 /GS 35 .177 /FWB-124 .177 /Custom Marauder .22 /Custom Disco .177


  • Guest
Re: Trigger
« Reply #4 on: August 24, 2006, 12:42:32 AM »
I just installed a trigger yesterday on a friends CFX, I noticed that the hole for the steped pin is a very close fit, and if you don't get the pin seated ALL the way flush in the trigger it binds and the trigger very  is stiff.

 My customer installed a trigger in his second CFX prior to me tuning this rifle, and said this rifle the trigger feel was lighter and he could feel the second stage, on the rifle he installed the trigger he said he was disastified with the results because he could not feel any difference from the stock trigger, but was going back and reinstall the pin and this should cure his problem with the rifle he worked on.

 Sounds like this is what they are doing. with out getting the pin flush in the trigger it binds and the trigger feels the same and there is almost no differene between it and before the new trigger instalation.


Also no adjustment was required to the trigger after instalation.

Offline randy_68

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Re: Trigger
« Reply #5 on: August 24, 2006, 02:36:30 AM »
This is the 2nd trigger that I have installed, its pretty idiot proof to install. The trigger pull in this rifle has always been hard to pull and scratchy feeling. So I disassembled, polished, and lubed it. It removed the scratchy feeling but has always been kinda hard to pull. Robert, as far as the lever goes, I removed all the parts listed, installed the bear trap pin in the new blade, then just placed the blade in the housing, the pin aligned with the slot, installed the pivot pin and e-clip. Is there something I'm missing?  One thing I don't understand is the lever installed in the trigger slot. Is this the pin?
Guns I\'ve owned--Winchester 800x .177, Winchester 422 .177 ,  R9 Goldfinger .22, (2)-Gamo Black Shadow .22, (2) Shadow 1000, (2)- Discovery .22, Sumatra 2500 carbine .22, .25 and rifle .22, Bam B51 .22, AirArms S400 xfac .22, S410 .22 older bolt, S400 fac carbine walnut .22, S410 xfac .22 side lever..Marauder .22, Bam B30-1 .22, Bam B26-2 .22 and .177, Talon SS .22 and who knows whats next

Offline CharlieDaTuna

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Re: Trigger
« Reply #6 on: August 24, 2006, 08:28:28 AM »
This note has been added to the instructions being sent with the trigger. It is on the website instructions but I neglected to add it to the printed instructions.

Regarding the scratchy feeling. Most of this is due in some cases to the stamped out trigger housing. 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 the 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.

The face of the adjustment 2nd stage adjustment screw will mate to the lever and smooth out even more over a short period of time.

After installing the new trigger blade, you can look down into the trigger housing behind the trigger and see if the lever is in place. If not, just slide it over until it drops into the slot with your little screwdriver. The lever must be in the slot (C) when you finish the installation.
Bob  aka:  CharlieDaTuna
Co-founder of the GTA


HOME OF THE GRT-III TRIGGER
   Website:  http://charliedatuna.com/

Home of the NPSS-NP Triggers:  
            http://charliedatuna.com/NPSS.htm

E-Mail:  CDT22@Verizon.net

Benji-342 .177 /Brazilian Winchester 800 .22 /Gamo Cadet .177 /Gamo Shadowmatic .177 /Gamo 440 .22 /Gamo Royal .22 /Gamo Whisper .177 /Gamo SK-1 .20 /B-20 .177 /TF-99 .177 /QB-78 .177 /QB-78t .22 /QB-78-(CD) .22 /QB-78-(CJ) .22/QB-78D .22 /Crosman 2240 .22 /Cros 150 .177 /Crosman Back Packer .22 ?Crosman AS 2250 .22 /Daisy Mod 93 .177 /Marksman 2004 .177 /GS 35 .177 /FWB-124 .177 /Custom Marauder .22 /Custom Disco .177


Offline CharlieDaTuna

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Randy...the
« Reply #7 on: August 24, 2006, 10:16:44 AM »
The lever sets down inside the slot in the top of the GRT. Sometimes, it will not be quite centered in the housing as it can slide back and forth on it's pin. If it sets off to one side or the other during the installation, it will ride on top edge of the trigger and not drop down into the slot.

One of the problems that I have seen is that a couple of the guys did not install the fat pin and of course that won't do...lol... You are right though... if the instruction are followed, it pretty easy and fool proof. If there is an actual problem after the correct installation, it usually caused by the trigger housing being bent or something but that is rare.

The fit geometry of the GRT trigger is exactly the same as the final GTX-III trigger and we had that worked out precisely. I have installed about 5 of the GRT's already as well as about 20 others that have been sold and installed so far with no problems except this late one. I'm sure that it will be resolved though.
Bob  aka:  CharlieDaTuna
Co-founder of the GTA


HOME OF THE GRT-III TRIGGER
   Website:  http://charliedatuna.com/

Home of the NPSS-NP Triggers:  
            http://charliedatuna.com/NPSS.htm

E-Mail:  CDT22@Verizon.net

Benji-342 .177 /Brazilian Winchester 800 .22 /Gamo Cadet .177 /Gamo Shadowmatic .177 /Gamo 440 .22 /Gamo Royal .22 /Gamo Whisper .177 /Gamo SK-1 .20 /B-20 .177 /TF-99 .177 /QB-78 .177 /QB-78t .22 /QB-78-(CD) .22 /QB-78-(CJ) .22/QB-78D .22 /Crosman 2240 .22 /Cros 150 .177 /Crosman Back Packer .22 ?Crosman AS 2250 .22 /Daisy Mod 93 .177 /Marksman 2004 .177 /GS 35 .177 /FWB-124 .177 /Custom Marauder .22 /Custom Disco .177


Offline CharlieDaTuna

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John...I just sent you an e-mail
« Reply #8 on: August 24, 2006, 10:20:57 AM »
JOHN...you've got mail.
Bob  aka:  CharlieDaTuna
Co-founder of the GTA


HOME OF THE GRT-III TRIGGER
   Website:  http://charliedatuna.com/

Home of the NPSS-NP Triggers:  
            http://charliedatuna.com/NPSS.htm

E-Mail:  CDT22@Verizon.net

Benji-342 .177 /Brazilian Winchester 800 .22 /Gamo Cadet .177 /Gamo Shadowmatic .177 /Gamo 440 .22 /Gamo Royal .22 /Gamo Whisper .177 /Gamo SK-1 .20 /B-20 .177 /TF-99 .177 /QB-78 .177 /QB-78t .22 /QB-78-(CD) .22 /QB-78-(CJ) .22/QB-78D .22 /Crosman 2240 .22 /Cros 150 .177 /Crosman Back Packer .22 ?Crosman AS 2250 .22 /Daisy Mod 93 .177 /Marksman 2004 .177 /GS 35 .177 /FWB-124 .177 /Custom Marauder .22 /Custom Disco .177


  • Guest
Re: Trigger
« Reply #9 on: August 26, 2006, 02:10:28 AM »
I just received and installed a GRT-III in a new Gamo Stutzen.  The installation was very easy and the trigger is simply awesome.  Thanks to Charlief for developing a great product.

  • Guest
Re: Trigger
« Reply #10 on: August 27, 2006, 01:29:24 PM »
I installed the GRT-III on my Shadow 1000, followed the instructions per the letter and no problems.  The stepped pin was tight, but I made sure it was in all the way.  The trigger really makes a big difference.  Thanks Charlie!

  • Guest
RE: Trigger
« Reply #11 on: August 28, 2006, 03:21:54 PM »
I just installed my new GRT-III trigger.  What an amazing difference!  I had stopped shooting because of the rough, unpredictable factory trigger.  I can't wait to give it a workout tomorrow (it's dark outside!)  GAMO should have used something like this from the factory instead of that sorry piece of junk they used.  (Sorry, I get a little fired up over that trigger; the trigger on a Red Ryder BB gun is better).  Oh well, it gives Charlie a little extra income and he deserves it for coming up with such an excellent design ( do I get a commission for that Charlie?).