ORIGINAL: Rebel Hog
ORIGINAL: eldeguello
Obviously, this idea did not work at all. Consequently, they decided that a rifled barrel was necessary to shoot them.
Back in the 60's BRI (Ballistic Research Institute) of California did extensive research with their slugs using the Mossberg 500.
It is now knownas the Winchester BRI., but it's a Sabot for Rifled Barrels.
You are right,
but at first, BRI DID NOT STATE that they had to be used in a rifled bore-quite the contrary, actually!