In this PounderLabs video we delve into how cannelures provide performance gains for the 38 Special 148 gr. Hollow Base Wadcutter (HBWC). We explain how analytical methods like experimental design and regression analysis can be used for understanding and improving reloading this cartridge. We highlight component selection, reloading tools/gauges and special loading techniques. See how the Ultimate Cannelure Tool Model ll (UCT) is used to easily add cannelures to bullets and cases. We explain our range techniques and deep dive on using the Ransom Master Pistol Rest.