GP-100 Trigger Reset Problem

[Sundowner]

Hi, all: I just took delivery of a new Ruger GP-100, blued 4". I was surprised at how smooth the trigger is as that is one of the usual knocks against the Rugers vs. the Smiths. However, In the first 65 rounds that I have fired, I have had two instances where the trigger stayed all the way to the back and did not reset. I had to manually push it forward. Otherwise it seemed to function normally. I plan to fire at least a couple of hundred more rounds through it to see if the problem clears up before calling Ruger. But I was wondering what causes this malfunction? Any information will be appreciated.

[DArBad]

Quite unusual for a brand new gun. Not having your gun in my hand disassembled, I would have to guess........the trigger return spring. Must be a defectively weak spring was installed, a weak hammer spring could also be the culprit, or a combination of both.

Don't delay, send the gun back to the factory ASAP.

[JTROKS]

Were you shooting double action? I've had 3 Ruger GP100s and when shooting double action a complete forward motion is advisable when resetting for the next shot. There is a sweet spot - in this case a sour spot that if not completely reset and trigger is pulled DA it will give a light pull and only rotate the cylinder. I had the trigger locked back once after hitting the sour spot twice and really short stroked the trigger for the third pull to only lock it back. After doing the same thing you did it seems to function just fine given the trigger is fully reset.

[jdg30]

The GP100 probably has small metal shavings or rough burrs in the inside parts. I got a brand new one and before I first shot it the gun got all jammed up when I was trying to field strip it because of a couple metal burrs from rough machining. I took it apart, cleaned it and deburred/polished certain parts and the gun was very smooth and functioned perfect afterwards. The problem was because of a few metal shavings in the internal parts from the factory.

If you do a little research on how to disassemble the gun completely and which parts to lightly sand and polish it will make a significant difference in how smooth the gun functions. It is really pretty easy to do and you'll love the gun afterwards.

I bet you just have some metal burrs or debris from machining in the channel for the trigger return spring that are keeping the trigger from returning the way it should. It's an easy fix to do yourself and you'll learn how simple the gun is if you disassemble/clean/de-burr and reassemble it.

Rugerforum.net has a lot of good information on how to make the gun even better.

[Sundowner]

Thank you, gentlemen, for your replies. I will try your remedies in reverse order. I'll post my results. Thanks, again!

[jdg30]

I assume from your post that the gp100 is brand new. If that's the case then there should be no problems with weak springs because they are already stronger than needed to enhance reliability and overcome resistance of the rough stock parts. Metal debris in the action can still cause rough function and problems like the trigger sticking.

If it's used and the previous owner changed springs out, the trigger spring may be lighter which can make the trigger return feel sluggish instead of snapping back quick like with the stock spring. I got a Wolff spring calibration pack for the gp100 and polished up the internals of the gun. I left the trigger spring stock for quick trigger reset and reduced the hammer spring to the 12 lb spring to lighten the trigger pull a little but still maintain 100% reliable function. I believe the stock spring is a 14lb spring for reference.

[Sundowner]

jdg30: Yes, it is brand new so I think the metal degris may be the problem. Thanks!