Is it a rust ?!

[kovac]

Hello

Quick question,it freaks me out, today I took the barrel of my cz97 to a gunsmith, he polished the barrel and it look nice, BUT i was trying to show him this marks inside the barrel, and he cannot see them?!? Please if someone know is this rust, it's just on the end of barrel, and they don't have rust color. Is it just discoloration and should i be worried about, before this i was at the gun range and shoot perfectly.


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[M1A4ME]

That first picture (can't see any of in the 2nd and 3rd pictures) looks like pitting from rust to me.

Some moisture may have gotten into the very end of the  barrel and stayed long enough to corrode the metal.

Having said that, if it still shoots good, I'd be shooting it.  I have an old M1917 Winchester that looks like a rust old sewer pipe inside it's pitted so bad.  It still shoots fine.  It's just about impossible to get nice and clean though, due to the stuff getting hung up in the pits.

After I've cleaned mine (pistol, rifle or shotgun) I run a patch down the barrel with some of the same oil I use to lubricate the gun and wipe off the exterior surfaces of the metal with.  It makes me feel better to know the bare metal of the inside of the gun barrel has a little rust preventive oil on the lands and grooves and chamber areas.  It doesn't have to be sloppy wet with oil.  In fact, if you do get it sloppy wet with oil, run a dry patch through the barrel to remove the excess.

[delphidoc]

Sure looks like pitting to me in that first pic- excellent photo BTW. I'm guessing here, but I would think it's due to voids in the metal. I wouldn't think a barrel cleaning solution would do that only in the grooves and not on the lands. Maybe you could send that pic to CZ-USA and see what they say about it. My second guess is it wouldn't affect accuracy. I'd keep that photo for future reference to see if the areas increased in size.

[kovac]

Sure looks like pitting to me in that first pic- excellent photo BTW. I'm guessing here, but I would think it's due to voids in the metal. I wouldn't think a barrel cleaning solution would do that only in the grooves and not on the lands. Maybe you could send that pic to CZ-USA and see what they say about it. My second guess is it wouldn't affect accuracy. I'd keep that photo for future reference to see if the areas increased in size.

It's just on the end of the barrel on one side, I tried to scratch with a tool and it's smooth, the rest of the barrel is glossy. I shoot approximately 100 rounds a year. Total i shoot from this gun around 500/600 rounds. My question is, can i stop this from spreading? And what should i do to stop it?


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[SI VIS PACEM PARRABELLUM]

Even if you don't clean the gun after each range session you should run an oily patch down the bore before storing the pistol away. Even guns that I don't shoot often get a monthly wipe down with an oily rag and a patch down the bore just to prevent what you see here.
Incidentally I would give the bore a good scrubbing with a brass brush and solvent as it does also have the appearance of leading.

[SPO1SHADOW]

That little boo boo won't hurt a thing. Just shoot it. Nothing at all to worry about.

[kovac]

That little boo boo won't hurt a thing. Just shoot it. Nothing at all to worry about.

Now that i was expecting to hear!!! I trade my glock 19 for CZ97b and i was feeling guilty!! You know, i was having "end of world gun" and i can't survive a day i piecefull time for pitting !! [emoji3][emoji3], just kidding, i LOVE this gun, that's why i'm concerned, i would like to keep it for a long time, especially that i live in Macedonia, where trading guns it's easier than following the procedure to get new licence for brand new, where sometimes it takes more than a year to have an answer from legal department. I would try one more time tomorrow to polish the barrel and i will post the results. I don't expect to be removed, but i hope that it will not be such a problem, after that (don't hate me) but i will use the gun like a safe queen with proper oil and hope to have it for years.


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[SPO1SHADOW]

If you are not very careful you can do more damage trying to get rid of that spot than it's worth. Don't polish the sharp corners off of the rifling and for sure you do no want the muzzle end of the barrel larger in inside diameter. It looks like the barrel has already been polished on the inside. That little spot will not effect anything but your feelings right now but if you remove it you might really create a problem. If it were mine I would shoot it out. By the time you shoot it enough to remove it, it will be time for a new barrel and you will be an expert marksman. About 50K should do it. 

[kovac]

If you are not very careful you can do more damage trying to get rid of that spot than it's worth. Don't polish the sharp corners off of the rifling and for sure you do no want the muzzle end of the barrel larger in inside diameter. It looks like the barrel has already been polished on the inside. That little spot will not effect anything but your feelings right now but if you remove it you might really create a problem. If it were mine I would shoot it out. By the time you shoot it enough to remove it, it will be time for a new barrel and you will be an expert marksman. About 50K should do it. 

Guys, whay don't you just kill me, come on, it's New Year... where is optimism with "don't worry, it will last long time if you keep it oiled" [emoji17][emoji17][emoji17][emoji17], just kidding, thank you all of you for the replay and opinion, I'm shure that all of you are much more exerience shooters than me, plus probably all of you are from America where you guys are shooting your guns A LOT more than we in Macedonia. I will keep the barrel oiled all the time. I'm using Ballistol Klever oil, is it ok?


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[M1A4ME]

Even the handguns I don't shoot (that are in the house and subject to being picked up for a range use or other use) get a field strip, inspection, wipe down with an oily cloth every few months.

The oily patch down the barrel has protected some of my old rifles for as long as 8 years.  I had a batch of 03's, M1917, etc. in the attic for an 8 year stretch several years back.  I pulled them down, laid them out in the floor and inspected/wiped them down again and they went into my new safe (were some have been for another 3 years).  Absolutely no rust on them (well, no new rust in the case of that one M1917).

Hard to tell what happened to your pistol.  Not much of a way to touch that part of the barrel.  I say that because you can wipe a gun down, then touch the metal with your sweaty/oily fingers and it can then rust while it's sitting and waiting on your next use of it.  Once you've wiped it down, don't have skin contact with the metal surfaces again.

[kovac]

Now it's turn to be lead remains on the end of the barrel, I didn't want to polish one more time, but i try to scratch off with a sharp tool, now I'm shure it's not pitting, the previous owner of the gun shoot hollow points with lead.


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[SPO1SHADOW]

I told you it was nothing to worry about. Glad you found it just to be a lead deposit. I bet you will sleep better tonight. Happy New Year!

[SI VIS PACEM PARRABELLUM]

Now it's turn to be lead remains on the end of the barrel, I didn't want to polish one more time, but i try to scratch off with a sharp tool, now I'm shure it's not pitting, the previous owner of the gun shoot hollow points with lead.


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Good deal. I thought that might be the case. I shoot cast bullets as well and you get that from time to time.