I took the original 9mm slide from my 75B frame with me today to practice. I put a CGW barrel bushing in it earlier this week and mounted a Burris FF III 3 moa red dot on it, like I have on the 97B"E" and P-09. I've been shooting this 75B frame with a Kadet conversion on it in the rimfire bullseye matches, and I've been shooting a CZ-97B"E" in the centerfire matches.
The trigger pull on this frame is a little under 2.5 lbs with the rimfire slide and barely 2 lb-9 oz with the centerfire slide, measuring from the center of the trigger. Might pass a tech inspection, but it is borderline for centerfire minimum of 2 lb - 8 oz.
I was very happy with the accuracy of the gun from a rest this week, but I knew the real test was single hand standing at 25 and 50 yards using standard targets and timing. Shooting it in match simulation conditions resulted in some excellent groups but I had difficulty with trigger control, of all things. And I had a couple of light hits out of 100 rounds. The light hits are probably due to a dirty firing pin channel or a burr on the FPSB, not a problem to fix at all. No problem.
The real issue I have is that I don't have time between now and the match next weekend to get used to the very light trigger pull. Same problem I had with the 97B"E" when i first got it--the trigger was too sensitive. Now that I have the .45 pistol pull up above 3.5 lbs, I can control it just fine. At 2.5, I was releasing shots unintenionally way too often. Happened to me maybe 5 times this morning out of 100 rounds with the 75B.
Groups were good when I controlled the trigger properly, even out to 50 yards slow fire. Timed and rapid were good except for the early discharge shots. I can use it as a backup match gun, I'll just have to be very careful with it.
My dilemma is this. The 75B trigger pull is within the limits and works fine with the Kadet slide. I don't think a one pound increase in trigger pull would hurt me at all with the Kadet but I won't know without trying it. No way I'm going to jack with that gun a week before a match.
I got the 97B"E" out for the first time in a couple of weeks and shot 60 rounds. Really good results, including a 99 timed fire target. That was all it took for me to decide to shoot the 97 Easter weekend instead of the 75B with the 9mm slide. So, back to the 2015 match pistols==the Kadet on the 75B frame and the CZ-97B"E". They both are "right" for me.
Joe