The bullet used by the slug gun pictured in the thread about home made muzzle loaders:
The lineup and some stats, left to right:
CCI Subsonic LR HP
.422" 300 grain paper patch, tapered
.463" 2 piece swagged picket bullet
.530" Lewis style belted picket bullet
.543" Lewis style, double belted picket bullet
.532" Picket bullet
.495"(nose) and .511"(base) slug gun bullet, 800 grains. Nose is alloyed, base is pure lead. Fired with paper patch and about 150 grains of Swiss 1-1/2 FG.
.554" slug gun bullet of 997 grains, also using 150 grains of Lord Black. The gun shooting this one is pictured below, built by Perry. It also uses a 1,300 grain 2 piece swagged bullet when the owner feels man enough.