Vetting Ruger GP100s for Carry/Defense Use

[Flashman]

If it functions OK when it gets hot, I would leave it at that.

[SwampDweller]

If it functions OK when it gets hot, I would leave it at that.

I spent quite a while at the range today, primarily shooting the GP100 in question but a couple of other guns in between. I put a total of 236 rounds through the GP100. I did experience the sticky cylinder opening/closing at one point, but here's how it broke down:

236rds total
-50 rounds Magnum fast (got very hot)
-followed by 30rd Special fast (very hot)
-18rds Mag (after cooling a little bit)
-6rds Special (Was sticky closing/opening after this for a little while, set it down and picked up after a minute and it cylinder swung out normal. Gave it a wipedown/scrubbing just before this happened)
-6rds Spl (it was ok?)
-122rds Mag, got hot again, ran fine

I was giving it a little wipe down/scrubbing every once in a while once I got past 100 rounds or so.
So I'm a bit confused why it seems to do it sometimes but not others, many times not doing it even when hotter than comfortable to hold. Is this potentially a problem with the gun? Or some kind of fouling temporarily in the wrong place at the wrong time? Maybe something else?

[JonInWA]

So let me get this straight: Throughout your session, the GP100 cycled and ran fine, but at the roughly 75 round point, it became a bit difficult to open and close the cylinder until it cooled down a bit (but otherwise operationally it was fine)?

Best, Jon

[SwampDweller]

So let me get this straight: Throughout your session, the GP100 cycled and ran fine, but at the roughly 75 round point, it became a bit difficult to open and close the cylinder until it cooled down a bit (but otherwise operationally it was fine)?

Best, Jon

I suppose that is the case. Last time it happened it was a bit less than 75 rounds, but I will need to check my notes. It never happened in the first 1k rounds. Maybe I didn’t get it quite as hot during that time but it did get pretty warm.

[SwampDweller]

So let me get this straight: Throughout your session, the GP100 cycled and ran fine, but at the roughly 75 round point, it became a bit difficult to open and close the cylinder until it cooled down a bit (but otherwise operationally it was fine)?

Best, Jon

Went through my notes again. Yes, you have that straight. Although I think there was a brief moment where the action was stiffer but a quick scrub/wipe in the relevant areas quickly remedied that.

So maybe I'm just reading too much into this and it's fine?