Poor Mans Slug
 

This video pretty much speaks for itself.

http://gunsnplanes.blogspot.com/2011...-shotguns.html

I'm not advocating doing this but it's interesting for sure. I'm not sure what would happen with different chokes.

Interesting post.

Use an improved cylinder choke or a short barrel with no choke?

Maybe I'll keep a few cut shells around the house for uninvited late night guests. :D

Learned how to do that at the old Mott Lake Compound in Jan 80. Got to be careful if you're going to load them in the magazine of a pump (870). Rough handling will ocassionally cause the round to seperate with predictable consequences.

Old school...but agree with Sean...Not so good with autos.

Yup, used on door breaching...very effective on steel reinforced door lock plate assemblies. I remember shooting then thru a bulldozer blade on the range.
Practice your razor cut to leave a strap on either side and slow load/chamber a pump.

I've used these to great effect on coyotes that wander within about 50 yards of the goose blind. My best luck has come using the Federal paper hulls and a shallower cut.

Had an RRD guy show me this back when I was a PFC trying to get into Regiment. That didn't happen, but things have a funny way of working out in the end.

Still talk about/teach it in the 18B course

From the article:

Not exactly 70mm, that would be nearly twice the diameter of the M203 grenade launcher round.

The video has it correct: "seventy caliber"

A 12 gauge is 0.729" inches in diameter, so it would be fair to call it a "73 cal"