When using reloads two most visible mistakes include SQUIBS and OVERCHARGING. Overcharges are obvious. In the heat of competition, after a squib, one may instinctively attempt a TRB....ergo, yikes. Though my squib count in 20 yrs of reloading is less than 10, nonetheless, it can still result in a big owe-ee. When loading for IDPA, I visually inspect each round before topping off with a bullet. At GSSF, I will now only shoot Blazers....espec since I can't scrounge brass.