This is not by accident or sloppy machining. CZ pistols are made short chambered this way for a reason. I am not an CZ expert, but FWIK, I would not get the chamber reamed. I've shot Jakes hard lubes that work and their are others but the ones made of wax over wax with no oil just don't cut it. some real lube in the groves like LARS carnauba red or felix lube is a nessesity as I've had absolutely no luck with the hard lube in comercial bullets I've bouhgt in past days. IMO if you properly fit your bullet cast at BHN #14 or harder then charge laods with a powder of WW231 or slower to at least 1050 fps it should shoot. You need to measure your bore to start then figure out what the issue is with tumbling. We have become so accustomed to oversized European bores it would seam some think something is wrong when you can't shoot an oversized bullet. Then if the throat is smaller than your bore you have a problem that needs remedied.Īs I stated in my post above My S&W-659 throat will not take a. I'd say the bullet should fit into the throat. This week I seated the bullets so that forward most grease groove was fully covered by the case and chambering was perfect. Two weeks ago, about 75% of the cartridges failed to go to battery due to the OAL being too long. 357 bullets for my SIG Sauer and tried them - successfully - in the CZ as well.īe aware that the chambering problem might be OAL rather than bullet diameter. I shot the same bullet yesterday in my CZ-75. I can go with a smaller boolit, but then all accuracy is lost and I get tumbling. Just eyeballing it I can see it's thicker than the others.
The boolit will stick on the sharp transition between the chamber and rifling, whatever that is called. I tried them in my HiPoint carbine and Kahr, slide in all they way out to 1.075oal! The CZ won't even consider it until about 1.015.Īt this point it looks like I need to get the chamber reamed some if I want to shoot cast out of it. Got my 358-125 mold going and sized them down from an as-dropped 362 to 358. Usually.Īfter all this cast boolit frustration with my CZ, I finally realized the chamber isn't the same as my other 9mm's. Usually keyholing bullets are symptomatic of undersized diameters. If the gun shoots jacketed really well, you might want to hesitate before you try altering it. The Lee moulds are so inexpensive that it's a better option that reaming the chamber right away.
WALTHER P1 9X21 FULL
Look for a bullet that has a proper length while having a short full caliber section that allows reasonable seating depth while having little full caliber diameter sticking out of the case to prevent engaging the short throat. Even if designed for jacketed, it's possible to find something that fits. If you want to get a mould that casts on the larger end of the tolerance range, send Lee a check and have them select one that does.they've done this for me in the past. I'm thinking of the 356-125-2R or maybe the T元56-124-2R if the front band is seated almost entirely in the case, which shouldn't make seating depth too great. I'd suggest an inexpensive Lee RN mould for the 9mm to avoid throat engagement and seating depth issues. Ideally, you'd have a gun that would allow a long enough overall length to chamber your bullet of choice at a reasonable seating depth while also allowing a fat enough bullet that exceeded the barrel's interior diameter measurement. A longer chamber may not tolerate a fat bullet while allowing a longer overall length. There's a difference between a chamber that doesn't allow a longer overall length and one that won't accept a fatter bullet.Ī short chamber may accept a fatter bullet.
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