Carbon buildup

[kkborre]

When I'm at the range, my Rami gets a carbon buildup on the ramp after about 150 rounds that causes a FTF.  All I need to do to fix it is use a cloth to wipe down the ramp.  I don't have enough experience to know if that is normal.  Is it?

[Joe L]

It is normal for some residue to accumulate on the ramp.  My bet is that the Rami is a little more sensitive to it than a full size gun.  I think just remove it every 100 rounds or so and not worry about it too much.  The stuff will build up at different rates depending on the powder used in your ammo. 

My bet is some reloaders and people with Ramis can confirm or add to what I've offered above.  I don't have one.  I have some small guns, though, and all are more sensitive to the buildup than a full size.

Joe

[eastman]

How old is your outer recoil spring? It has a short service life before it needs to be replaced (I've read between 500-1000 rounds).

[CZTom]

When I'm at the range, my Rami gets a carbon buildup on the ramp after about 150 rounds that causes a FTF.  All I need to do to fix it is use a cloth to wipe down the ramp.  I don't have enough experience to know if that is normal.  Is it?

RAMI BD 9mm does seem to carbon up with target ammo.  I just do a quick clean with a "bore snake" pulled through at the range-no problem.  Pull it through the magazine well, not the ejection port.  That way, it will clean/wipe the feed ramp also.

[kkborre]

How old is your outer recoil spring? It has a short service life before it needs to be replaced (I've read between 500-1000 rounds).

I replaced my outer recoil spring somewhere around 800 rounds because it was also causing FTF.

[kkborre]

I just do a quick clean with a "bore snake" pulled through at the range-no problem.  Pull it through the magazine well, not the ejection port.  That way, it will clean/wipe the feed ramp also.

So the bore snake goes in the muzzle and out the magazine well?  Do I need to put cleaning solvent or anything on it?

[Mathi]

No!

I think he says the bore snake is fiddled in through the grip and not through the port while the slide is locked back.
Exactly this is what I am doing with all my pistols when pulling a snake through directly after shooting but I never do this from the muzzle end.

Best regards
Mathi

[Ruber]

Yes-normal to get buildup.  No-not normal for it to cause ftf's 150 rounds into a shooting session.

Not sure why you changed only the outer recoil spring, I always change both at the same time.  Sounds like the gun isn't broken in yet, but I know you have a good number of rounds through it.

I would start looking into other culprits mentioned in other break-in and ftf threads such as the firing pin hole, breech face, etc.  Small problems there may only manifest themselves as the gun gets  dirty or the springs weaken.

[CZTom]

No!

I think he says the bore snake is fiddled in through the grip and not through the port while the slide is locked back.
Exactly this is what I am doing with all my pistols when pulling a snake through directly after shooting but I never do this from the muzzle end.

Best regards
Mathi

Yes, that is what I mean.  Never feed the boresnake, or any cleaning rod either, from the muzzle end.  That brings all the junk into the chamber.  Always feed from the magazine well to the chamber and out of the muzzle,  thereby cleaning the junk out of the gun, not into it.

Also, I use a little CLP oil, just a little, on the "leading" end of the boresnake.

[kkborre]

Not sure why you changed only the outer recoil spring, I always change both at the same time.

The Rami Recoil Assembly is a Captured Recoil Spring system.  We couldn't replace the inner spring unless we bought a whole new assembly. 

http://shop.cz-usa.com/ProductDetail/0642160001_Rami-Recoil-Assembly


 

[kkborre]

Never feed the boresnake, or any cleaning rod either, from the muzzle end.  That brings all the junk into the chamber.  Always feed from the magazine well to the chamber and out of the muzzle,  thereby cleaning the junk out of the gun, not into it.

Good to know; thank you!  I'll get a bore snake and take that with me to the range, although a wipe down of the slide with a cloth has solved the problem so far.  We have two new Rami BDs and they are performing exactly the same.  Needed new recoil springs; ramp gums up with carbon with use.  Other threads have suggested that they need the springs replaced fairly often, so I wasn't surprised by that. 

[Ruber]

Not sure why you changed only the outer recoil spring, I always change both at the same time.

The Rami Recoil Assembly is a Captured Recoil Spring system.  We couldn't replace the inner spring unless we bought a whole new assembly. 

http://shop.cz-usa.com/ProductDetail/0642160001_Rami-Recoil-Assembly


 

I had not seen the disclaimer before, they used to only sell everything separate.  While I do not think this is the entire problem, I like to replace both at the same time.

The assembly still seems cheap enough though, that if I wanted to replace springs without taking it apart, going with a new full assembly seems like a bargain.

[kkborre]

I'm still having FTF issues with my Rami.  I'd say about 10% are sticking. The last trip to the range I was cleaning the ramp after about 100 rounds to try and stop the FTFs.   The new outer recoil spring has about 400 rounds on it.  The slide just barely doesn't make it into full battery; a tap on the back is all it takes.  But I shouldn't have to stop to tap the slide; especially on a EDC.  I emailed CZ and they sent a warranty repair label.  I hope they can solve the problem, and it doesn't take months!

[Sergiodpk]

Sounds like a weak recoil spring. But have you considered polishing the feed ramp?

[slikshoes]

This doesn't sound right.   After a good initial cleaning after purchasing my RAMI ... I did not clean it again until 500 rounds were fired.  I only had 1 failure to feed at round #493 ... and it happened to be from a box of Remington UMC that I bought from the range shop b/c I wanted to stay at the range longer.  Ever since then ... I have not had a failure at all, whatsoever.

What ammo are you using (brand, grain, etc.)?  Does it consistently fail regardless of ammo?  Also ... the RAMI can be a bit snappy if you don't carry out your fundamentals (like grip).  Have you noticed more snap during the times it fails?

I think you did good by bringing this to CZ's attention (assuming it isn't ammo or user-induced somehow).