I’m pretty sure I know what the problem is here but just wanted some 2nd opinions to make sure I’m not overlooking something. My girlfriend bought a p10m. We haven’t put a whole lot of rounds through it but it’s got a few through it. I recently bought some reman ammo, from one of the larger well known remanufacturers that I’ve bought before and have never had an issue. The guns I’ve shot a lot of this ammo through include a cz ts2, cz p07, smith and Wesson csx, glock 43x, once again no problem. We were shooting her p10m the other day and it lodged a round almost all the way in the chamber but not deep enough to let it go into battery. I had to smack the front of the slide with a dead blow to get it freed up then inserted an empty mag to hold the slide back and put a plastic dowel down the barrel and tapped out rhe round. Noticed the case on it was a little bulged. Inspected the rest of the ammo and found that the bulk of it had slightly bulged cases. The p10m is the only gun having problems with it. I’ve got some new factory ammo on the way to put through it. Should I consider sending this thing back to cz regardless since it seems like the chamber may be too tight in it? I mean my ts2 eats this ammo no problem and I would expect it to have a tighter chamber than a p10. I handpicked a couple dozen rounds out that had either no bulge or only a very minimal bulge and the gun ran fine with those. Just not real sure which direction to proceed from here

If you send it back to CZ and tell them that it doesn't function with crappy remanufactured ammo with bulged cases, they're going to (rightfully) send it back without doing anything to it and tell you there's nothing wrong with it.

What I was getting at, since the ammo runs fine in every other pistol I have, is it possible that the chamber is a bit small? You would think the ts2 would have a tight chamber and not want to run this ammo but it hasn’t missed a beat. I just find it odd that out of 5 guns there is only one that is having issues. It also doesn’t exactly inspire confidence since it’s her carry gun. While it may be crappy ammo, all my other guns eat it. Know what I’m saying?

what if all your other guns have oversize chambers ?

Common dude, maybe the TS2 is sprung heavy enough to overcome it.
Maybe the P10 has a chamber thats Sami on the small end and the TS has Sami on the large end.

the thing i find interesting is you know the ammo is bulged (which I dont consider "crappy", I consider SHEEIT" and you are blaming ANY gun for not running with it.

buy decent ammo and dont worry about it.

CZ is notorious for having short chambers. You need to seat the bullets a little deeper until they feed and function 100%.

Does it run in REAL factory ammo, ie federal?

Shitty reman, even from a well known reman company, is still shitty reman.