Access the official Mayville Engineering Company reloaders bushing chart on MecShootingSports.com. Click the Powder Bushing Chart link under the Shotshell Reloaders heading near the top right of the home page. Information is available for shot shell powders, including Ramshot, Accurate, Alliant, IMR and Hodgdon. Winchester information is also available.
Sites such as AlliantPowder.com and Hodgdon.com offer product-specific bushing charts on their sites. Find the Alliant Powder MEC reloaders bushing chart by clicking the Resources link at the top right of the home page, and then clicking Powder Bushing Chart. Download the chart. Locate the Hodgdon chart by hovering the mouse over Shot Shell Bushing Chart under the Data heading at the top of the home page. Click MEC.