What's wrong with my GP100?

T

three-fifty-seven

New member
Howdy,

I was at the range today shooting my Ruger GP100 when I started to notice that every time I pulled the trigger I would feel something hit my left cheek. This sensation actually hurt and I managed to get myself a burn mark. Also it happened with both my .357 Mag and .38 Special ammo and had happened on the very first shot.


I know the information that I provided was vague but right now I don't know which else I need to include.

The gun itself is fairly new (March 2012) if that means anything. And if need be, I can take some pictures of my GP100.


Thanks.
 
Probably the cyl gap is on the loose side , timing components on Rugers are fairly robust & unless blaintently abused or just plain ole worn out just don`t go out of time .

I have seen mismachined cyl. &/or unsquared forcing cone face (end of the barrel) Also a bent crane will do it .

Contact Ruger ,ask for a pick up box, they may pick up shippin both ways.

GP
 
If the timing is off (i.e. cylinder and forcing cone misaligned on firing) then the sides of the bullet can get shaved off when they hit the forcing cone. Hard to say whether that is what is hitting you versus just powder. You might try holding a piece of soggy wet cardboard up well behind behind the gap (keep your fingers safe!) to intercept what is hitting your face and see what sticks to the cardboard.
 
What melchloboo said. It sounds like hot gun powder but it could be lead shavings too. You probably haven't shot it much yet. I put up with a gun like this for years... I was too lazy to contact the manufacturer and too inexperienced to believe it was a gun issue. I eventually just parked it and didn't shoot it any more. I would contact Ruger and see what they say. I would shoot it a bit more just to confirm the problem.
 
Maybe you could go through a gunshop who has more experience with dealing across international borders if it comes to shipping. But first I would contact Ruger and see what they have to say about it. They might be able to help you with the shipping issue. They should certainly know what is required if it comes to shipping.

You can measure the cylinder gap with a micrometer or get a gunsmith to do it for you. It may be a case of the cylinders not lining up properly with the barrel or one hole not quite lining up and you get the powder or lead shavings issue created from that one chamber.
 
If a revolver is out of time enuff to shave bullets the stuff will cut ya or stik ya , more than likely it`s escaping powder residue/particals.

Ruger does know the ins & outs of shippin to our North .
 
I got a status update;

After doing some tests we have found it that it was not the revolver but the weather conditions outside. When I had these issues with the revolver it was extremely windy outside and we have found that to be the cause of why I was getting blasted in the face.
 
I can't imagine how wind could cause you to get "blasted" in the face hard enough to hurt and leave a burn mark.
Denis
 
In Alberta we have periods of extreme wind, which had occurred on that day. If the wind was blowing into my face when I was shooting my heavy H110 loads, it could on been possible for some of the unburnt powder to fly on my cheek.

Anyway this is my guess for now and if anything changes I will update my thread.
 
I still can't see it. :)
You'd have to have hurricane-velocity winds to change the direction of burning gas & particulates 90 degrees and still traveling fast enough to injure your face.
Denis
 
Different powders & different burn rates (pressure peaks) will make a difference in how much & how fast the particals/pressure escapes the cyl gap .

I can see H-110 being a major offender of this & have experienced it .

As far as the wind blowing particals back on ya , I were`nt there.
 
DPris said:
I still can't see it.
You'd have to have hurricane-velocity winds to change the direction of burning gas & particulates 90 degrees and still traveling fast enough to injure your face.
Denis
Click to expand...

Normally I'd agree, but I'll give the OP this one. I've been shooting my .357s on windy days and noticed "stuff" being kicked back toward me. (Also happens when shooting through/near objects at the range too.) It baffled me to no end when it happened, but I don't notice it on calm days. So the logical conclusion is...
 
It may not be coming from the cylinder gap. I used to have a .357 G2 Contender with 7" barrel that would pepper my face with certain loads. My new GP100 and my older, tightly gapped Freedom Arms 97 pepper me too.

There's plenty of unburned powder exiting the muzzle with heavy H110/W296 loads and the pressure blows it in all directions.

You could test your gap by setting up a cardboard tunnel around the gun to shoot through. As long as no metal shows up on the cardboard you should be OK.

BTW, lead or jacketed bullets? If lead then you might have a mix of powder and lube spraying about.
 
I've had the experience of having the wind blow back particles. I shot at an outdoor range and the final Action Pistol stages were always facing west, at the sun, into the wind.
 
I too have experienced particles hitting my face on windy days, more-so when shooting off a bench rest. I believe this is because the particles first bounce of the rest/table top before being blown back in my face. Generally shooting freehand eliminates this.
 
Particles hitting the face, yes.
Hard enough to burn in being diverted 90-degrees by wind alone, I still can't see. :)
Denis
 
You must log in or register to reply here.
Back
Top