Removing "trigger staging" on sp_101

[jack]

I have dry fired my sp_101 about 14,000 times, and it is lubricated properly. I can still "stage" the trigger when firing it double action. I would like to eliminate the "flat spot" in the firing system, so I "can't" stage it. Is there a simple way to do this? :?:

 

[Jimbo357mag]

Seems to me most Ruger double-actions have that mechanical tendency. Just pull the trigger more quickly without hesitating if you don't want to stage the trigger pull. I have heard that Colt triggers will break without a pause and can confirm the one I had would let off without warning during the trigger pull.

 

[jack]

I also have a Ruger Security 6, and its trigger is "real smooth". I can't "stage" it if I try. I'll keep working on "pulling-it-through" on the sp_101. thanks for the reply.

 

[Thel]

There must be a way to alleviate it to a degree. Grant Cunningham, on his website, states:

"On "Six" series and SP101 Rugers, the "hump" that occurs in the middle of the trigger pull is virtually eliminated, giving you a "straight-through" pull of consistent weight. This makes accurate double action shooting much easier!"

Source: http://www.grantcunningham.com/ruger-gunsmithing.html

I wonder if this occurs at the point where one transitions to the double action sear. Ah, here is a string on this:

http://rugerforum.net/ruger-double-action/88762-22lr-sp101-trigger-job-question-multiple-threads-2.html

 

[Carry_Up]

I can't understand what you are asking for. By design, a DA trigger must cock the hammer and rotate the cylinder before it fires. Any time before that sequence is complete, you can stop pulling the trigger rearward and the process stops. You might be referring to spring "stacking" and that is the sensation that a firmer pull begins somewhere in the middle of the trigger stroke. That's built into the gun during the design process. The Ruger DA system is the same as the SW, a two-stage process. The second stage is there to complete the full trigger stroke without undue change in pull weight. Taken as a whole, there are many factors that affect the overall full trigger pull weight and that includes the geometry of the parts as well as the friction of the parts as they move in and out of their respective positions. Compromises are made during design and testing. Let us know where you think the Ruger engineers screwed up.

 

[OldePhart]

I think jack is probably talking about that "hump" where the DA switches from the hammer dog to the sear.

If so, it's not so much that the engineers messed up as it is that the amount of final testing and fitment at Ruger seems to have declined significantly in the last several years. On some of the SPs the transition is extremely noticeable even after a "typical" action job.

One can learn to shoot without letting the hump be distracting though.

 

[Thel]

In my case the SP after the action job still had a bit of a hump at the point of transition. Having a number of hammer dogs from Numrich I swapped a couple on the hammer and managed to smooth out the hump. The link I provided to the discussion on removing the hump:

http://rugerforum.net/ruger-double-action/88762-22lr-sp101-trigger-job-question-multiple-threads-2.html

has a couple of pictures of where the individual modified the DA sear on the trigger which is another possible way to rectify the situation.

 

[REB]

It is possible by stoning down the DA sear notch on the bottom hammer but you have to be careful not to take off too much. If you remove too much the hammer will drop before the cylinder if fully locked in place.

 

[jack]

It's not a "problem". I'm not "accomplished" enough at gun mods to try honing any internals. Was just wondering out loud. I found Grant's web page very interesting. Thanks for all the replies.

 

[woodsy]

I have dry fired my sp_101 about 14,000 times, and it is lubricated properly. I can still "stage" the trigger when firing it double action. I would like to eliminate the "flat spot" in the firing system, so I "can't" stage it. Is there a simple way to do this? :?:

Simple answer: NO.

 

[Joe S.]

All Ruger DA's i've fired have it. I prefer it when doing slow fire especially...

 

[ginzo]

Is the "staging" perhaps when the cylinder is rotating, you feel it when the cylinder latch is locking the cylinder in place? Just a thought. With a 3 timed cleared gun, turn it in a safe direction and watch the cylinder and see if you can tell the "staging" occurs when the cylinder gets to the latch.

Just a random thought.

Chuck

 

[jack]

ginzo: I'll try that. That may be what's happening. Interestingly, I have a S&W 642 that I can feel the staging on also.

 

[jack]

As another comment, I just bought a sp-101 with 2.25" barrel. I shoot it double action only. Got some pretty tight groups at 7 yds the other day. My point being...........a lot of the trigger control is just me. Practice........Practice..........Practice.

 

[any ruger]

These are not match target guns.As long as it puts the hit where you want it you will be happy. Practice practice and more.

 

[jack]

ginzo: You are right. What I have been thinking is a "flat" spot in the trigger operation is actually the cylinder lock falling into place right before the hammer drops. Wow! I learned something! Now............If only I could remember! :mrgreen:

 

[ginzo]

Jack,

"Even a blind chicken gets some seed sometimes". Wow, my 1st real contribution since I signed on!!! :shock:

Now here is what I have learned, on a 6 cylinder gun, you get the effect we are discussing. On a 642 (I presume is a 5 shot J frame)? It would be slightly different. Note the relation to the lock notch on a 6 cylinder, it's just a tic off the cylinder/chamber itself. On a 5 shot, (I have a 638 and a 649) the cylinder lock is EXACTLY centered between the cylinder/chambers. So, in that effect, the "flat" spot would come just a tic before the trigger/hammer drops.

In conclusion, it is pronounced sooner in the trigger pull of a 6 rounder, as with a 5 shot, you are just about "there" when you would feel it.

Sound correct?

Chuck

ginzo: You are right. What I have been thinking is a "flat" spot in the trigger operation is actually the cylinder lock falling into place right before the hammer drops. Wow! I learned something! Now............If only I could remember! :mrgreen:

ginzo: I'll try that. That may be what's happening. Interestingly, I have a S&W 642 that I can feel the staging on also.

Correct, my issue is I like to tinker. I enjoy working on mechanical things. I don't get enough range time.

These are not match target guns.As long as it puts the hit where you want it you will be happy. Practice practice and more.

As is with most of us!

As another comment, I just bought a sp-101 with 2.25" barrel. I shoot it double action only. Got some pretty tight groups at 7 yds the other day. My point being...........a lot of the trigger control is just me. Practice........Practice..........Practice.