Migra Ammunition Ultimate Field High Brass is the first ever lead load stacked specifically for upland game. Perfectly designed for hunters with the same proven process used for entire line of Migra ammunitions. Make every shot count with Migra Ultimate Field. Designed as an advantage to efficacy by stacking shot sizes Migra loaders took these specific components at exact percentages to increase pattern consistency as well as shorten shot strings for stacked impacts. In a nutshell, these wads, powders, designs, and manufacturing processes are all custom from the ground up. There's a reason Migra Ammunition is the pioneer and innovator of stacked loads and this is it. FeaturesHigher kill ratiosIncreased pattern uniformityConcentrated shot patterns