I am still trying to get my new CZ75B squared away. I have the usual smaller chamber problem and trying to get to proper OAL with a leade of .015. One of the guys recommended that I take one of my fired 9mm cases, flare it and lightly place a bullet in it and press it lightly into the chamber to determine my chamber length. Presume that I resize it before "belling" it. Now if I do not size it before belling the bullet slides deep into the cartridge. If I do resize it and THEN bell it, then the bullet will not go deep into the chamber for proper seating. It sits high on the barrel. If I press very hard then the bullet will get stuck in the chamber as I remove the cartridge and I must push the bullet out of the barrel with a small cleaning rod. I have to be missing something here. Can anyone help or point me to a video? If not I am going to buy a Sinclair chamber measure...I want to get this right. Also extreme accuracy is not important with this firearm.