I have been reloading 9mm on my Lee Breech Lock for several years and of course have a feel for the amount of energy/leverage it takes for resizing. I started resizing a bunch of 45 ACP and was surprised how much less leverage/energy it took. Is this because the 45 ACP is straight wall, whereas the 9mm has some taper?
Additional information. For the 9mm I have Lee Carbide Dies. The 45 ACP are older Lyman All American Dies I purchased. They are not carbide and yes I have been using lube. The other info is that I removed the decapping pin assembly and the button for neck expansion is very small but am assuming that it isn't necessary for 45 ACP. The resized brass fits perfectly in the Wilson case gauge.
Additional information. For the 9mm I have Lee Carbide Dies. The 45 ACP are older Lyman All American Dies I purchased. They are not carbide and yes I have been using lube. The other info is that I removed the decapping pin assembly and the button for neck expansion is very small but am assuming that it isn't necessary for 45 ACP. The resized brass fits perfectly in the Wilson case gauge.