CZ slide rail damage

skimmer

skimmer

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This is the slide from my CZ 75B, about 5 months old and less than a thousand rounds through it. As you can see there is some scoring of the metal.

So far I've been using a combination of Gunslick graphite grease on the slide, and Outers Gun Oil for everything else. Picked up some G96 yesterday to help with cleaning the small bits and sear.

Is this the result of insufficient lube? Too much lube causing pressure problems?
I've been using the Gunslick on bolt-action rifles for as long as I can remember.

Tell me what you think please

http://imgur.com/pC0HcYL,E1T4qT0#0
http://imgur.com/pC0HcYL,E1T4qT0#1

Sorry about the linked images. I don't have permission to upload images.
 
I thinkt that here is no such thing as too much lube, except in cars/engines in gral, yes you will increase the pressure but in a gun is almost impossible.

I think it looks like you have some galling going on there, perhaps the lube you are using does not do well in a semi auto?

I am not an expert with CZs really, sorry. I am sure other folks here might know what this is for sure.
I never heard of gun slick either.

For semiautos I use Mill comm TW25B, it's a synthetic lube and have not found anything better yet. It's recommended for SIG pistols which are aluminum frame + steel slide, so it works.

Cheers
 
I don't actually see any scoring or gouging in those photos.

That's just what the parts are supposed to look like.
 
If you looked at the gun when it was new the rails would have looked much the same. I'm seeing some porosity or small point marks but I don't see any signs of galling. So I'd suggest that these were there to begin with.

It's perfectly normal and standard to see the blued or other finish wear off on the rails and for some rub marks to show up during the initial wear in on any surfaces that rub. You've got false expectations if you think that any gun does otherwise.. It won't hurt the gun's accuracy or anything else. And from what I've seen on my high round count guns that I've owned from new this contact wear seems to occur over the first short while and then it stops once the surfaces have mated to each other. At around 1000 rounds you're 80 to 90% of the way there.
 
Thanks guys. I'll dial back the pressure on the panic button.

However, it wasn't marked up like that when new, and if a rifle bolt ever started getting marks like that on it I'd be doing some serious investigating.

I don't see why two smooth pieces of metal that slide on each other are creating sideways divots and scratches in the slide?
 
I think you guys are missing the borders of the rails. If this is normal in a CZ, this is as bad as the machining of a Norinco....

It can't be normal.
 
Those are machining marks, there is nothing wrong with your slide rails (underside).

If you want them to be smooth, put 600 or 800 grit sandpaper on flat board or so and smooth out the underside of rails over it. Finish off with 1000 grit.

Also, you can use just synth motor oil on the gun. For slide, put a drop of oil inside frame in the slide grooves (both sides) just where barrel support lugs are and let oil go down towards front, cycle slide back and forth a few times without recoil spring and slide stop, remove excess oil.
 
At least some of those marks were there initially but hidden by the black finish. Once the finish wore off it exposed the marks.

As for some rub marks appearing I assure you that is normal. There isn't much contact area and there WILL be small point contact spots when new until the surfaces wear in. Once there's more of a surface area that actually does rub the lubricant can float the metal surfaces away from each other like it is supposed to do. At least until a bit of grit finds it's way in. Then you'll get some more scratching. It's not like our guns have dust seals or anything after all. Just two steel surfaces hoping that they can avoid grit lodging between them.

So again given the environment we use our guns in you simply do not have realistic expectations of what is going to happen. It's a filthy, dirty, grit filled world out there.
 
Mine looked pretty much the same when new, but the rails are pretty shiny after approximately 15k rounds. I wouldn't worry about it.
 
I see a totally normal looking slide in those pics. Anywhere that is shiny now, will get even smoother as you shoot more. There are some machine marks in the v cut but that's pretty normal. the other stuff looks like some scratches in the paint. Nothing of concern at all. The wear on those slides occurs mostly on the sides, not on the bottom. you've just got your trigger bar riding on the underside and the firing pin disco and the hammer.
 
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