Casting for CZ 9mm

[morb]

Hi there, this is my first post but I visit here often.
I have a CZ 75 in 9 mm that I'm thinking about casting bullets for, I have read quite a bit casting for 9mm and how they can be finicky and how they usually need a bigger bullet. I slugged the barrel and it comes out at .355 so my question is should I go with a.356 mold or a bit bigger. I don't want to end up buying 2 or 3 molds in different sizes to get the right one also I have to order pretty much everything and I hate waiting weeks for the mail lol

[badbob454]

the cz i had liked a smaller boolit so go with the 356 the chamber is tight and larger boolits jamb up during feeding the lee carbide factory crimp die # 90860 actually sizes the case while it crimps and ensures feeding
http://www.midwayusa.com/product/557190/lee-carbide-factory-crimp-die-9mm-luger

[Ed_Shot]

My CZ 75B is an outstanding performer with boolits sized .358. I shoot the Lyman 358242 (120 gr) and 356242 (90 gr) and 356402. I also use Lee's 356-125-2R and 356-120-TC. All these molds cast .358+ with my alloy. I load to the OAL's spec'd in the Lyman 4th Ed CB Hand book. I have never had a problem with function or leading in the CZ or in Glock 9MM's with Lone Wolf barrels which are also reported to have tight chambers.

What boolit(s) are you going to shoot?

[morb]

Thanks for info guys. I was thinking of using the Lee 356-125-2R.

[sigep1764]

I have a cz75b omega and it is by far my favorite range toy. Mine has a very short throat, so be sure to do your plunk test with whatever boolit you choose to cast. Like Ed_Shot, I use the Accurate Molds version of the Lyman 356402. Mine get sized to 358 to an oal of 1.065 and I use a custom expander for my SDB by lathesmith. If yours is anything like mine, it will be great with cast.

[Ed_Shot]

Thanks for info guys. I was thinking of using the Lee 356-125-2R.

The 356-125-2R shoots fantastic in my CZ 75B. The boolit itself is .565 long from my mold and I load it to a COAL of 1.055. That puts .260 of the boolit inside the case. By comparison, the Lyman 356402 is .624 long and loaded to the Lyman spec'd COAL of 1.110 puts .264 of the booilt inside the case.

The MAX COAL for the Lee 356-125-2R in my CZ's chamber (where the boolit touches the rifling) is 1.065.

My go-to 9MM load for the 356-125-2R is Promo 3.8 gr. @ 1075 fps.

Be careful and have fun.

[morb]

Thanks Ed I'll have to see if I can find some Promo around here, powder selection isn't so great here.
You guys have no leading issues? I think I read somewhere that leading could be a problem over 1000fps

[dubber123]

Thanks Ed I'll have to see if I can find some Promo around here, powder selection isn't so great here.
You guys have no leading issues? I think I read somewhere that leading could be a problem over 1000fps

I've run plain base boolits over 1,300+ fps with 0 leading. My 9mm load is a bit under 1,000, (heavy boolit), but I am sure I could exceed that speed with no issue. Fitting a large enough boolit is the biggest hurdle. Have fun.

[Ed_Shot]

Thanks Ed I'll have to see if I can find some Promo around here, powder selection isn't so great here.
You guys have no leading issues? I think I read somewhere that leading could be a problem over 1000fps

If your boolits are sized correctly, I think most here would recommend .357 or .358, and you use a good lube, and an adequate alloy (like clip-on WW + 2% tin) you should not have any leading issues. All my regular loads for 120~125 gr boolits in 9MM are in the 1075~1100 fps range. My Lyman 356242 (90 gr.) is a great performer @ 1200 fps, again with no leading.

[gwpercle]

I want to prepare you for the fact that just because .356 is on a mould it may or may no drop them .356. Now I have the Lee 356-125-2R in a double cavity and it does drop them . 3565. Changing alloy will cause a difference in diameter also.
If I ordered another and got one that dropped them .357 it would not surprise me. That's just the way man made machined things are, especially moulds.
And this is why it's a good idea to size your boolits. That makes them the size you want and not just left to chance.
Don't get all hung up on OAL, seat the boolit so that it fits into the clip, feeds from clip up into the chamber and locks up. Your particular gun will determine correct OAL . It has to feed , fire and eject.
Good Luck....gary

[ipijohn]

I have a bunch of CZ 9's and have found that they will ALL shoot well with a powder coated bullet sized to .358. Using this size I don't have to load "gun specific" loads. My LC9, PF9, carbine and others shoot the same load without problems. BTY I also load the same boolit for my 38 spec pistols.

[morb]

I cast round ball for my muzzle loader so I understand that what's stamped on the mould isn't always what it will drop. I have found that the temp of the lead and the hardness as well will effect the final product.
What I'm not sure about is how much can you can resize a bullet, say a .358 to .356 how much will it change the bullet? Would it make it too long?

[Ed_Shot]

Resizing .002 will have no ill effects and I commonly resize a couple of older molds .004 with no noticeable harm. I think there is a thread here on how much is too much sizing.

[badbob454]

my boolits bulged the cases so i had to go a smaller diameter boolit to prevent not fully going into chamber , i had to push the slide forward sometimes so i was recommending the 356 ish diameter , i shot a cz75b before CZ was popular , perhaps the new chambers are more generous ,,

[sigep1764]

Where ya from morb? If you're just getting started, maybe one of the guys or gals here is close and could work with you a little.

[LAGS]

A Member " Armoredman " has been using cast bullets in his CZ's for the 5 years that I have known him.
I recently got him into Powdercoating the boolits and he is very pleased with the results, even just Shake and baking them , and baking them in a $5.00 Goodwill special Toaster oven.
You might try and send him a PM for loading data and results.
He does Tumble lubing, and pan lubing on his boolits too.

[morb]

Where ya from morb? If you're just getting started, maybe one of the guys or gals here is close and could work with you a little.

Sorry about that guys, I forgot to update my preferences. I'm from Saskatchewan, Canada. A bit of a hassle to meet up and get first hand pointers lol

[morb]

A Member " Armoredman " has been using cast bullets in his CZ's for the 5 years that I have known him.
I recently got him into Powdercoating the boolits and he is very pleased with the results, even just Shake and baking them , and baking them in a $5.00 Goodwill special Toaster oven.
You might try and send him a PM for loading data and results.
He does Tumble lubing, and pan lubing on his boolits too.

Thanks, I'll try that.
You all have been a big help already. I done a lot of reading on here and other places on the net but after awhile it all kinda runs together and leaves me with more questions than I had before. I think it's starting to gel now.

[MtGun44]

Read the sticky on "Setting up a new 9mm for boolits" - it should help
you get there the shortest route.

Bill

[prickett]

My CZ 75B is an outstanding performer with boolits sized .358. I shoot the Lyman 358242 (120 gr) and 356242 (90 gr) and 356402. I also use Lee's 356-125-2R and 356-120-TC. All these molds cast .358+ with my alloy. I load to the OAL's spec'd in the Lyman 4th Ed CB Hand book. I have never had a problem with function or leading in the CZ or in Glock 9MM's with Lone Wolf barrels which are also reported to have tight chambers.

What boolit(s) are you going to shoot?

Same for mine - .358"

[mikeyman]

My cz75 p07 duty shots .358 no leading and excellent accuracy from noe 121 gr rn mold.

[bobthenailer]

I use cast boolets sized @ .357 dia for my four 9mm's and two 38 supers, some with match barrels, all slug between .355 & .3556 dia and shoot the tighest groups with a .357 dia boolet . from several moulds.