Got a CZ P01, need advice.

[chris in va]

I've been using the Lee 358-125-rf for my 75, but my new P01 absolutely won't feed them. They get jacked up at a severe angle and jams against the top of he chamber.

I'm not against going with another Lee mold provided it doesn't keyhole and is reasonably accurate. Anyone have experience with their P01?

[Wayne Smith]

Chris, does it feed factory ammo? Don't assume it's the boolit until you check out the functioning of the mag.

[W.R.Buchanan]

Chris: Adjusting your Cartridge Overal Length could fix this.

My Glock 21SF would not reliably feed 200gr SWC's.

The chamber would contact the nose edge and step of the boolit at the same time the case hit the feed ramp. All three at once, perfectly timed!

This would litterally wedge the cartridge into the mouth of the chamber. SEE pic.

By increasing the loaded length of the round a few thousandths of an inch (.010) by seating he boolit further out, the front edge contacted the top of the chamber then the rear step contacted later allowing the cartridge to feed smoothly into the chamber.

In other words all three points now came into contact with the barrel at different times.

This might be all that is necessary to fix your problem.

Randy

[sig2009]

The only way I could get these to feed in my SP-01 Shadow Target and 75B was to load them so that the crimp groove is totally exposed when the bullet is seated. I just forgot what oal I was using.

[sig2009]

Chris, does it feed factory ammo? Don't assume it's the boolit until you check out the functioning of the mag.

It is the bullet along with the oal. I had the same problem.

[chris in va]

The longest I can load the 358 is 1.01oal due to the ogive design. Otherwise the boolit shoulder jams into the leade and causes an out of battery condition.

My 75 was the same way but it fed them fine.

I'm starting to think it may be a mag issue. These are the stock mags and the springs feel really weak compared to the MecGar's I had on the 75. I took a close look at a jam and the case head was pretty deep in the magazine when it was jacked up at a 45 degree angle. I just can't see how two nearly identical guns wouldn't feed the same bullet profile.

The 80 Berry's I used during the match worked fine, no jams. Haven't bought a box of factory in three years.

[sig2009]

Checked the length I load for the SP-01 and 75B and it is 1.040.

[ipijohn]

I have a bunch of 9 MM CZ's that have never seen a factory loaded round. Can't help with the FN since I shoot only round nose designs in auto loaders. BTW with Lee's 356-124-2R I use an OAL of 1.065/1.070 in all without any problems.

[chris in va]

Thank you, the consensus seems to be favorable with the 2r mold. What size does it usually drop at?

Here's the jam I'm experiencing with the 358's in the P01. I can get about a mag through it before they jam, presumably due to the chamber getting fouled a bit.

http://imageshack.us/a/img15/518/photosgwy.jpg (http://imageshack.us/photo/my-images/15/photosgwy.jpg/)

[ipijohn]

Thank you, the consensus seems to be favorable with the 2r mold. What size does it usually drop at?

Here's the jam I'm experiencing with the 358's in the P01. I can get about a mag through it before they jam, presumably due to the chamber getting fouled a bit.

http://imageshack.us/a/img15/518/photosgwy.jpg (http://imageshack.us/photo/my-images/15/photosgwy.jpg/)


Don't know the size they drop since I lube, size and then re-lube everything that I cast just in case that I don't close the mold tight enough.

[chris in va]

I see. If you get a chance, could you measure a freshly dropped one so I can decide whether to use my 357 sizing die?

[ipijohn]

I measured a few and they are .3580 to .3585 before sizing. I have .356, 357, and 358 Lee push through sizers but my CZ's all seem to like .356 dia. Accurate with no lead in the barrels.

[chris in va]

Thank you.

[chris in va]

Alrighty, here are the results.

I tried some of my 358's with the MecGar 16rd left over from the 75bd sale. Flawless function, no jams. Same with the factory 10rd that is about 10 years old. Both have noticeably stronger mag springs compared to the factory 14rd.

The RO at my range happened to have some 356-125-2r made up and they functioned with the 14rd. No keyholing despite being sized at 356. One jam due to longer oal than the CZ was designed for. The boolit was wedged into the leade hard.

Bottom line, it was a mag issue. If these 356's function in the stock mags, I'll just leave it be and not worry about getting new MecGar's.

[chris in va]

Another update. The RN boolits also jammed with the 14rd mags. They work fine in the 16rd. I have some MecGar's on order.