12 gauge foster slug .675 load data

The modern foster type slug is now far easier to load utilizing modern trap wads instead of the older nitro card and fibre filler wads.  If using other slug data that may utilize these older wads reduce the powder charges by 10% to allow for pressure differences.  Some experimentation may be necessary to find a combination of wad and powder that will give a good even crimp with no opening or dishing.