Description of Round counter For Dillon Press XL650 / XL750 and RL550: This Round counter does not need batteries for operation, super simple to use and install. You can install it under 10 seconds with just 2 clicks. Good old mechanical counter with reset. No double counts, it works with full stroke (check video). Great for setting your personal goal or to precisely load full ammo box where you need 50 or 100 rounds multiplier.