It is easy to overlook the awesome power of a 12 Gauge…
Comparing the Winchester Super X 3 inch slug with the Federal 3 inch slug.
Shot into stacks of fence boards and layers of cinder block. 1 ounce at 1760 fps vs 1 1/4 ounce at 1600fps, slow motion impact at end.
Cinder block test is in the second video below.