Up until now I've reloaded and fired a set of 45 Colt cases 3 times. The case length for these vary 3/1000 " at the most. This is Remington brass.
I also have a set of 454 casull cases that I've fired once and never reloaded. These vary 7-9/1000 ". Stupid as I was I didn't meassure them until after I resized. And since I have carbide dies I didn't use any lube, (which I did with my 45 cases). The Casull cartridges were of a brand called HSM. I don't know what kind of brass it is. But they were considerable cheaper than all other manufacturer's.
Would not using lube cause larger variations in case length. Or is it a result of the higher preassure in the casull cartridge. Or lower quality brass. Or something else.
What's your 5C?
Thanks again for any answers!