Quick knows I use a load that's pretty much right in between what you are both loading. 13.5 gr Lil'Gun, CCI 400, 40 gr V-Max, 1.935" OAL and a clocked 2750 fps out of a 20" Handi rifle. That may be a little too long in your CZ.
I didn't shoot any real good 5 shot groups the other day, with one at 1.375" and one at 1.625",. However, I just remembered I can switch to a receiver with a lighter trigger, so maybe the gout in my trigger finger won't act up so bad next time. :roll: