When reloading 556 NATO (LC) - 223 I use a EGW Chamber Checker . As you can see in the attached photo, one (loaded w/ bullet) case sits .003 higher. After the case is trimmed and resized it drops right into the chamber checker! After loading I get the results you can see, with the cartridge higher than it should be. Trimmed at 1.74” long and loaded to 2.20”. Still loads and ejects in my AR 15 ok, but this is driving me nuts.
I use is the full length resizing die (LEE). The die is tight against the brass in the press. Some of the brass drops into the chamber checker without a problem after loading!
What do you think I am doing wrong?