My new P01 Omega

[simplemann]

I've installed 3 M*CARBO trigger spring kits in a 75 B, 97 B, and P-01 Omega. The Omega kit was the easiest to install.

They make a world of difference for not much money.

Yes I agree totally, worth the $$.

[Ron IL]

I got my springs in the mail today and put the 11.5 # one in.  Single action a little less than 4#.  Double action about 7#.  Would not fire one round.  Changed out to the 13# spring and would not fire 10 out of the 30 I shot.  So I used the double action for second strike and those all fired except 1.  I brought it home to break it down and see if there is any powder in it.  So I put the original spring back in it and will go with that.  At least it fires all the time.  It is single action about 4#.  Double is more than 12.  The Lyman tester maxes out at 12.  That 7# double action with the light spring felt pretty good.  Over 12 is pretty tough to do.

[Wobbly]

I got my springs in the mail today and put the 11.5 # one in.  Single action a little less than 4#.  Double action about 7#.  Would not fire one round.  Changed out to the 13# spring and would not fire 10 out of the 30 I shot.  So I used the double action for second strike and those all fired except 1. 

With what ammo ? All ammo is NOT created equal. There is a HUGE difference between ammo using Federal #100 primers and that which uses CCI or S&B primers. Winchester is somewhere in the middle.

Most of your competition shooters are handloading the much, much softer Federal primers. If you're reading their posts and blindly following them, then you'll be very sadly disappointed. Most factory ammo is using very hard primers.

[SI VIS PACEM PARRABELLUM]

I got my springs in the mail today and put the 11.5 # one in.  Single action a little less than 4#.  Double action about 7#.  Would not fire one round.  Changed out to the 13# spring and would not fire 10 out of the 30 I shot.  So I used the double action for second strike and those all fired except 1.  I brought it home to break it down and see if there is any powder in it.  So I put the original spring back in it and will go with that.  At least it fires all the time.  It is single action about 4#.  Double is more than 12.  The Lyman tester maxes out at 12.  That 7# double action with the light spring felt pretty good.  Over 12 is pretty tough to do.

I use CGW's 18lb hammer springs and never worry about misfires. Coming from da revolvers a bit heavier da pull doesn't bother me in the least. You must practice. Lightening trigger pulls IS NOT a substitute for trigger time. I love modding my guns and I'm as much a trigger snob as one can be but I spend ALOT of time at the range.

[Ron IL]

I am using my reloads with CCI rifle primers.  That is the only thing I have been able to buy in the last few months.  This is the only gun I have ever had that had trouble with light primer strikes.  I don't know for sure what the spring that came in it is but it is the only one that fires 100% with the extended firing pin.  It is shorter than the new ones I got from Cajun but heavier wire and stiffer.  When I do the pencil test it just jumps about 2 inches, the same as the 11.5 #s spring.  The 13# spring  makes the pencil fly out of the gun about 12 inches.  And it fired about 60% on the first strike.  You would have thought it would have done the best.  But I will go with the original spring doing 100%.  It is still a nice clean 4# trigger.  But I liked the 7# double action that the other springs had.  I haven't bought a new box of ammo in years.  The spring that came with the new extended firing pin seems a little heavier than the original that I took out.

[Wobbly]

I am using my reloads with CCI rifle primers.

Well, sir... Small Rifle Primers are harder and thicker than Small Magnum Pistol primers; which are harder and thicker than standard Small Pistol Primers. So there's your answer.

[Ron IL]

I bought a new box of Blazer brass ammo and tested it.  The primer strike was a lot better and deeper indent.  So the rifle primers are harder.  I will load up these and maybe someday will get some pistol primers to load for this one and then go to the 13# spring.  I can shoot up the hard primers in my 1911 and then the soft ones for the CZ.  Then eventually will be able to go all soft primers if they ever become available.  I can't believe how nice this thing shoots.  I have always compared stuff to the 1911 and nothing ever shot as good to me.  I've had Rugers, Berettas, and Sigs.  Guys on forums always say if you shoot a 1911 good you will like the CZ75.  And I really do like it.  I throw a clay pigeon on the 25 yard berm and wipe it out including all of the little pieces.  It's a keeper.  Now I may have to pick up a full sized 75 all steel to go with this one.

[Wobbly]

I bought a new box of Blazer brass ammo and tested it.  The primer strike was a lot better and deeper indent.  So the rifle primers are harder.  I will load up these and maybe someday will get some pistol primers....

So you were thinking that primers used in cartridges working in excess of 40 to 65,000psi (rifles) were the same material as those used in handguns working at 20 to 30,000psi ??

While Small Rifle primers are the same physical size dimensions as Small Pistol, and substitutions CAN be made. That doesn't mean they can or should be substituted across the board in every cartridge for every handgun. Especially in those handguns with reduced force hammer springs.

Brother, stop thinking is terms of "fit" and change your view point to that of "chamber pressure" and your shooting will be IMHO a lot more rewarding and safer.

[Joe A.]

Watch this video about spp vs srp. super vel small primer video...

https://www.youtube.com/watch?v=NGVRGsoOr6k

[SI VIS PACEM PARRABELLUM]

Watch this video about spp vs srp. super vel small primer video

What video? Do you have a link to something?

[Joe A.]

Sorry, I could not find a link to the video. Just do a search for what I posted and you’ll find it. I even copied the web page heading and that didn’t work for me.

[SI VIS PACEM PARRABELLUM]

I watched a couple vids and so there are couple youtube posters who claim they had no problems and had no failures. So this proves absolutely nothing as it pertains to your situation. The CZ is more sensitive to changes in spring rate than some guns. One vid I saw had a stock Sig with it's stock spring in place and had no failures. I'm sure if you stay with your stock spring you will have no failures either.
I tried srp years ago when I was still shooting revolvers regularly and found that even with stock springs I could get misfires because they were just too hard. I won't waste my time loading them for pistol use when the possibility of misfire is likely. Talk about a waste of time and components. You have been given good advice here but you may do as you please.

[Ron IL]

I knew small rifle are harder but this is the only gun I own that has problems with them.  I am very happy with this pistol as is but would have liked the double action to be a bit easier to use.  Maybe some day we will see some pistol primers.  CCI is the only brand that is on the shelf here.  Back when I could buy Winchester that is what I used.  I switched to CCI large primers when I was loading 45 acp a few years ago and  then went CCI small primers when they didn't have Winchester anymore..  Winchester did not seat as easy as the CCI.  As long as this things runs as good as it is I am a happy camper.  It is the only pistol I have had that I can shoot as good as my 1911's. 

[bonj]

I have a P-01 Omega with the MCARBO Kit installed its a fantastic pistol to shoot. Shooting one inch groups at 25 yards is some great shooting  .

Wow! that is great! no way near my 25 yrd groupings. I may just have to research this MCARBO kit.

[Ron IL]

What did just changing the trigger spring do?  My single action trigger out of the box is 4 lb.