I needed to load the Bayou 135s shorter than their 147s...note, this is in my PPQ, which has a shorter leade/chamber than my CZ, but if it fits my PPQ, it's guaranteed to fit my CZ. In this case, I was loading the 135s at a max of 1.09" in the PPQ, vs 1.12" for the 147s. In most cases, I could go another .01-.02 for my CZ, but the real answer is to check Wobbly's post on how to check max OAL in the tricky section..for your specific bullet/barrel combo.