another noobie with problems

hi everybody
I bought a crb in canada last weekend in canada and had very similar problems as keep the thief.
I shot maybe 100 rounds as soon as i bought it remington 230grn umc. original mag plus 2 more glock mags.
every mag at least once per loading the bolt would jam back and i would have to field strip it to unjam. unshot shells in mag were fouled.
lots of smoke from the extractor.
took it home and cleaned the whole thing spotless and then oiled it with m-pro7 lox gun oil (maybe a little excessively)
shot another 50 rounds of the same ammo
gun jammed again every clip every time usually on the fourth or fifth shot and again on the eighth or ninth shot
1 shot jammed a new bullett between the bolt and chamber
when i opened the gun on a coulpe occasions i had the hammer already forward and had to reset it before closing the gun
usually the bolt would unjam as soon as I pulled the 3rd pin of the upper receiver ( the one closest to the bottom of the grip)

any suggestions on what to do I would not rather have to ship my gun to the usa for work on it as i see this being hugely problematic for me
thanks

Hmm. so far we have not come up with a solution to this problem. Can't you return it to the gun shop and have them ship it to KRISS?

Hi

Sorry to hear that. I've talked with KRISS Switzerland about my jamming-problem and extrem ammount of carbon. They told me to send my CRB back.
But before, I've changed the "typ" of ammo. Both was Remington UMC, but the "new" bulltets had copper-colored heads instead of gold/yellow. No FTF-problems with this typ of ammo. Maybe you could try this first.

Greetings Keef

you definitely need to experiment and find what kind of ammo your gun likes unfortunately.

so friday I grabbed all the different brands of ammo I could get my hands on and found that just about all of them worked pretty well in my crb. American eagle seemed to work the best i.e. no issues at all for 100rnds. Glad it was such an easy fix thanks to everyone who responded!!

Glad to hear, but what was the solution?

sounds like luck.

seems it was just ammo selection probably close to a thousand rounds thru her (all desert eagle brand ammo) and no real jams. I do get the odd ftf and one mag jams on the second to last round pretty often but all in all a real fun gun