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Discussion Starter #1
Hello. This report is not significantly different than the one done earlier on a different Pre-B. If interested that report can be found on several sites via a search.

For that reason, this report will be shorter, primarily focusing on the pistol which has had different sights added. There is more detailed information on the ammunition fired as well as some recovered, expanded rounds fired into water.

The Pistol: This is a CZ-75 I bought in the early '80's NIB and for considerably more than one can buy a CZ-75 today, "B" or Pre-B. They were just flat hard to come by then and I just had to have one or die. You all know the syndrome.

This pistol has had no work done on the trigger, but Kurt Wickman did install a set of Novak fixed sights, plain black on black and I've had the barrel and some internal parts hard chromed. Mr. Wickman refinished the slide as well and I'm more than satisfied with his work.


This CZ-75 has really had little done to it. It has Novak fixed sights using the rear sight meant for the 1911 as the CZ has a relatively high rear sight for the height of the front sight. The slide was refinished with polished blue slide flats and matte blue on top. This one has an 18-lb. Wolff conventional recoil spring and a buffer. I've removed the bow from the "magazine brake" and the magazine will fall freely if so desired and the hammer spur's been bobbed a bit. The grips are CZ factory wooden ones.

Ammunition:

Today's shooting involved only factory ammo with bullets weighing from 65 to 127 grains. The average velocities shown are based on 10-shot strings fired approximately 10' from the chronograph screens.

Aguila 65-gr. IQ HP:
Average Velocity: 1492

Corbon 100-gr. PowRball +P:
Average Velocity: 1431

PMP 115-gr. FMJ:
Average Velocity: 1076

Remington 115-gr. UMC FMJ:
Average Velocity: 1186

Federal 115-gr. JHP:
Average Velocity: 1151

Fiocchi 115-gr. FMJ:
Average Velocity: 1163

Fiocchi 123-gr. FMJTC:
Average Velocity: 1061

Hornady 124-gr. CQ (XTP) JHP:
Average Velocity: 1153

Federal 124-gr. Nyclad HP:
Average Velocity: 1162

Triton 125-gr. Hi Vel JHP+P:
Average Velocity: 1266

Corbon 125-gr. JHP +P:
Average Velocity: 1194

Winchester 127-gr. RA9TA JHP +P+:
Average Velocity: 1285

All of these loads grouped well. Out of this particular pistol the largest standard deviation was with the Winchester 127-gr. load and was 29 ft/sec. The smallest was from the Corbon 125-gr. JHP.

Shooting: It was hot today and I did NOT do any fifty-yard shooting.
The shots fired at 15 and 25 yards were done in slow fire and single-action. The group fired at 25 yards was also done seated with my forearms and wrists braced. The 10 yard target was fired with the first shot being fired DA and that shot is marked...as is the "miss."

15 Yards: Each group consists of 5 shots.





25 Yards: This group was fired with some ammunition I've not used in the past, the Fiocchi 123-gr. FMJTC "Combat" load. I have no idea why they call it "combat" as I suspect it's no better than standard ball.



10 Yards: Eight sets of controlled pairs were fired with the first set starting double-action. That was NOT the miss. It occurred firing single-action and was my fault.



I also fired the relatively new Corbon 100-gr. "PowRball" into water as well as the Hornady 124-gr. "CQ."


The PowRball expanded to 0.65x0.66" and the recovered bullet weighed 77.4 grains. No jacket was found. The 124-gr. Hornady bullet which acts just exactly like their XTP weighed 120.1 grains and the bullet expanded to 0.52x0.54." Each "weight" includes the fragment next to the recovered bullet.

Observations: In this heat, the wide, smooth front grip strap of the CZ did become mighty slick and I were I using this pistol for serious purposes, I'd probably have it stippled or at least do the skateboard tape.
There were zero malfunctions with ejection positive with all of the loads fired.

It's my belief that the CZ-75 or the "B" version remain extremely reliable and accurate handguns that are very viable choices for either the range, home protection, or carry.

Best.

PS: If interested, there's a very detailed post on the CZ-75 found at:

http://www.hipowersandhandguns.com/CZ75.htm
 

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Difference between 75 and 75B?

What are the differences between the 75 and the 75B? I can see the trigger guard is squared off, what else?
 

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Discussion Starter #3
Hello. The "B" series of CZ pistols have internal firing pin blocks that are secured by a lateral roll pin through the slide. Thus, these pistols do not use the more traditional firing pin retaining plate. The recoil spring guide rods are currently being made of plastic I believe, where the older Pre-B guns' were steel. The contour on the trigger face is more rounded on the CZ75 than the B version and the slide serrations are in a "dished" area rather than on a flat surface for the B's. The thumb safety on the Pre-B as well as the slide stop levers are smaller than on the B guns and the fixed sights are smaller, too. The thumb safety on the Pre-B is retained differently than on the later-made pistols. There also appear to be some dimensional differences in the B's magazine well. I've noticed that some aftermarket magazines that work fine in the B guns won't go in my Pre-B's. Pre-B magazines do work fine in the B guns, however.

Best.
 

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Changes to a stock 75B

Thanks, I also read the article that you mentioned in your range report and that helped (I didn't notice it until I already sent the last post).

What changes do you reccomend for a new stock 75B? Change the spring?

Thanks,

Ed
 

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Discussion Starter #5
Hello. I use the Wolff conventional 18-lb recoil spring in mine as I shoot quite a bit of the hotter loads. I also use a Buffer Technology buff. If you shoot primarily standard pressure loads, the 16-lb spring is likely about right, but I have no problems with the heavier one.

Best.
 
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