Swifty
I would think there is likely a couple differences that should be discussed. One, my bet you are describing a custom barrel with minimum freebore where my CZ is a factory barrel with likely more freebore than your 223.
Secondly, when I am developing loads, I am developing the loads for a particular rifle. I would never shoot maximum or over max recommended loads in my Sako with a 223 PacNor barrel with hardly any freebore.
Not intending to be argumentive.
Cooper Model 21 MV
