Personally, I like the Centurion 12ga loads that have a single .60 caliber steel ball in a finned plastic casing to impart spin. Turns your shotgun into a rather accurate musket.
On a different note, I like your posts but the format always looks messed up.
If you place an html paragraph separator ( <p> ) before your first picture link and after, it will align things nicely and make it more pleasing to the eye. Just sayin'.
Sort of like this:
This was based on a "pen shank" created by Michael Yeh. Greg from TAOFLEDERMAUS Youtuber gets a chance to shoot this needle at a clump of clay and jelly down range. Check out the results below. You can see the needle footage here.
61 grains
I don’t think anything developed so far for the 12 bore is better than the Brenneke slug although some of the sabot slugs are said to perform well, especially in rifled barrels.
Looks like the wad (sabot?) did almost as much damage as the slug.