Penetration

Plain ¼" steel (the side of a skip) won't stop a slug from my elderly Greener
GP shotgun, it uses the old 12 bore 2¾" cartridges, I don't want to speculate
what some of the modern slugs from a 3" magnum shotgun
could do - but I would love to get my hands on some...

Might get to see some support weapons in a month or
two at Ballykelly - mildly interested to say the
least.