The legendary reliability of MEC shotshell reloaders is built on the simple genius of its interchangeable powder bushing system, and the #31 Powder Bushing is a perfect example. This is not just a piece of plastic; it's a precision-engineered measuring device. Designed to drop a specific and unvarying volume of powder, this bushing is the key to creating consistent ammunition. By consulting a MEC bushing chart to match your powder and desired charge weight to the correct bushing number, you can set up your press for a specific load in seconds. This #31 bushing fits all standard MEC charge bars and is an essential component for any reloader who values repeatable, data-driven results for hunting or clay shooting.