Is This Normal on my GP100?

[SwampDweller]

I've got 220 rounds through this 4" blued standard Ruger GP100, 50/50 split between .38 Spl and .357 Mag (Hornady Handgun Hunter and Rem 125gr SJSP), and many, many times of dry fire beyond that.

I noticed the pin in the back of the frame for the center of the cylinder (I'm sorry the name escapes me at the moment) is off-center. Is this within spec/normal/acceptable? So far it has functioned fine, but I don't have that many rounds through it. My brother has had legitimate functional issues ejecting spent casings documented in a previous thread of mine, but that is not relevant to this one. I'm posting a couple of pics of the off-centeredness I'm speaking of and I apologize in advance for the poor quality. I hope it still shows what I'm speaking about.
Any input would be appreciated,
Thank you

[FrankB]

On a S&W revolver, that’s a bolt. Rugers have it built integrally to the crane latch. Is there much end play in the cylinder? I’ve sent a couple of pistols back to Ruger, and they’re very quick. That’s all I’ve got.

@jetfire

[SwampDweller]

On a S&W revolver, that’s a bolt. Rugers have it built integrally to the crane latch. Is there much end play in the cylinder? I’ve sent a couple of pistols back to Ruger, and they’re very quick. That’s all I’ve got.

I'm not sure how to gauge if there is excessive end play or not. There is a little bit.

Functionally, I have not had any issues. I just noticed that bolt (if that term can be applied to the Ruger) seems to be a bit off center.

[jtcarm]

That looks like a lot of space for the bolt to roam around in.

Is the cylinder lockup good & snug when you close it? No side-to-side movement, or stubbornness latching shut?

[RevolverRob]

I'm pretty sure mine is off-center as well, but can't confirm because it is in a different place than I am.

@OlongJohnson has looked closely at GP100s and @Flamingo has a couple he might be able to go look at his and see.

[OlongJohnson]

I'm not near my GP for the next few days, but I'd not be worried. It's been a couple years since I had my Ruger apart, but as I recall, the only role of that part is to push the spring-loaded pin in the crane/cylinder assembly forward out of the hole to unlatch the cylinder so it can be opened. The lockup is determined by the pin that's part of the crane/cylinder assembly and rides in the hole that the pin in the photo floats in. I deburred mine to eliminate any chance of it being sticky or wearing the hole or the pin, but that's all.

[mjac]

My GP100 357

A bit hard to see but the bolt (?) is slightly off center to the right. Not quite as far over as yours appears to be.

[Flamingo]

All 3 of mine are off center. The one that is closest to being centered is the Security Six.


GP100 WC 3"


GP100 4"


Security Six 6"

I don't think it is an issue. Up until I got my 14-2 my 4 inch GP100 was my favorite to shoot. I put close to 3K rounds through it last year.

[Stephanie B]

From looking at the schematics on Numrich, I think the gizmo is the Crane Latch Spring Plunger. It's retracted in the photos, so it's a little hard for me to see if it fits right. I would be surprised if there's supposed to be much side-to-side slop. But it does look a little funky.

If you don't have a good pistolsmith in your area, my suggestion is to call Ruger's Customer Service and chat with them. They might want you to send the gun in.

[jetfire]

I've got 220 rounds through this 4" blued standard Ruger GP100, 50/50 split between .38 Spl and .357 Mag (Hornady Handgun Hunter and Rem 125gr SJSP), and many, many times of dry fire beyond that.

I noticed the pin in the back of the frame for the center of the cylinder (I'm sorry the name escapes me at the moment) is off-center. Is this within spec/normal/acceptable? So far it has functioned fine, but I don't have that many rounds through it. My brother has had legitimate functional issues ejecting spent casings documented in a previous thread of mine, but that is not relevant to this one. I'm posting a couple of pics of the off-centeredness I'm speaking of and I apologize in advance for the poor quality. I hope it still shows what I'm speaking about.
Any input would be appreciated,
Thank you

I'm away from my GP100s, so I can't look at it right now, but if it's not shaving lead on either side of the forcing cone you should be okay. Ruger builds a lot of tolerance into their guns