New P-10C impossible to pass plunk test

[HossMan]

Hey guys,

I have a Square Deal B that I load 9mm with. I've loaded about 4,000 rounds since I've owned it. My SP-01 and my P-01 eat them all up. They pass the plunk test every single time. The bullets I use, admittedly, have a bulbous ogive: Acme 145gr and 124gr. I also have some Xtreme 165grs for fun.

So, I can't get the P-10C's barrel to pass the plunk test. I've never fired factory ammunition in it. Does it need to break in first? I find that hard to believe. I really don't want to purchase 9mm when I can just roll my own... ESPECIALLY during these times lol

Even loading my rounds ridiculously short, the bullet still makes contact with the leads. Anybody here have experience loading for the P-10C?

Best regards,

HossMan

[bang bang]

welcome,

you need to keep an open mind on many things when you are troubleshooting.  Suspect EVERYTHING until its ruled out, even yourself.

and then, just because you buy something doesnt mean it cant be faulty.

But have you tried ANY FACTORY LOADS?  maybe something like a 115 FMJ?

what about any other FACTORY? 

i would start there first and go from there. 

i would also give the chamber a good cleaning.  if you have not done so. 

[noylj]

The solution to chambering problems is to determine the cause:
Take the barrel out of the gun (or, open the cylinder of the revolver). Drop rounds in until you find one that won't chamber. Take that round and "paint" the bullet and case black with Magic Marker or other marker. Drop round in chamber (or gage or cylinder chamber) and rotate it back-and-forth a few times.
Remove and inspect the round:
1) Scratches in the ink on bullet--COL is too long (not a revolver issue)
2) Scratches in the ink on edge of the case mouth--insufficient crimp
3) Scratches in the ink just below the case mouth--too much crimp, you're crushing the case
4) Scratches in the ink on case at base of bullet--bullet seated crooked due to insufficient case expansion (not case mouth flare) or improper seating stem fit
5) Scratches in the ink on case just above extractor groove--case bulge not removed during sizing. May need a bulge buster.

[Wobbly]

CZ chambers were always on the shorter/tighter side, but still fairly close to each other in internal dimensions. Lately it seems like the internal dimensions are all over the place.

I like noylj's list.

Please tell us what you find.

[HossMan]

Update: 115gr FMJ factory loads don't pass the plunk test. 100% of the time. https://atlantaarms.com/products/elite-9mm-115gr-fmj-match-amu.html this stuff, specifically. I haven't tried other rounds, but I will tomorrow.

[painter]

Update: 115gr FMJ factory loads don't pass the plunk test. 100% of the time. https://atlantaarms.com/products/elite-9mm-115gr-fmj-match-amu.html this stuff, specifically. I haven't tried other rounds, but I will tomorrow.

Just one man's opinion, but if your gun won't chamber that ammo with that bullet profile, there's something wrong with your chamber.

[HossMan]

Update: 115gr FMJ factory loads don't pass the plunk test. 100% of the time. https://atlantaarms.com/products/elite-9mm-115gr-fmj-match-amu.html this stuff, specifically. I haven't tried other rounds, but I will tomorrow.

Just one man's opinion, but if your gun won't chamber that ammo with that bullet profile, there's something wrong with your chamber.

They will chamber, but the projectile is contacting the throat.

[painter]

OK, sorry for my mis-speaking.

If that round hits the rifling your chamber is out of spec, IMO.

[HossMan]

OK, sorry for my mis-speaking.

If that round hits the rifling your chamber is out of spec, IMO.

I agree. I'm going to call the factory and I will post back once I have done so.

[Bret]

Hossman, take a look down the barrel from the chamber end.  Can you see freebore?  Can you see the leade to the rifling?

[toteone]

I reload  both my P10C and P01 at 1.095 OAL, no issues.  Over 6k reloads used in each with no malfunctions.

[Earl Keese]

I reload  both my P10C and P01 at 1.095 OAL, no issues.  Over 6k reloads used in each with no malfunctions.

Without actual bullet specs, your OAL is irrelevant to this discussion.

[M1A4ME]

if factory FMJ (115 or 124) won't chamber 100% I'd say there's an issue.

Call CZ USA and talk to them.  Only used the CZ warranty one time but it was fast and easy (except for FedEx forgetting where they put my slide in their warehouse for 3 days.)

Good luck with your pistol.

[toteone]

I reload  both my P10C and P01 at 1.095 OAL, no issues.  Over 6k reloads used in each with no malfunctions.

Without actual bullet specs, your OAL is irrelevant to this discussion.

PD 124JHPs, sorry left out key info.

[painter]

OK, sorry for my mis-speaking.

If that round hits the rifling your chamber is out of spec, IMO.

I agree. I'm going to call the factory and I will post back once I have done so.

What did they say?