I have been reloading for about a year and have an issue I need some help with. I built a Tromix 458 SOCOM upper and I bought some Black Butterfly ammo. I finally found everything I need to reload, Starline brass, Berrys 350gr bullets, SBR Socom powder and Winchester primers. I also bought the case gauge from Tromix, the issue that I am having is the rounds, dummy to start with, will fit in the case gauge fine and the come out just fine, no force required to remove from the case gauge. But when I try to chamber one of my rounds they don't want to eject, I have bang the stock of the rifle on the ground to eject it. The Black Butterfly ammo will chamber and eject just fine. I am using Redding dies and my RCBS Rockchucker press.