Wish I could find the skirts I found on the ground, I don't know if they came off when the powerbelts but the plywood or in the air. They were shaped like a funnel and the back was the bore size of my rifle, no burning or melting either.
I shot one into a 4x4 about a foot long, this was oak from my friend saw mill were I was shooting. I was very impressed with what it did to it, a few I pulled the tips out and they opened in the air about 30 yards from the barrel.
They worked so good if they weren't so pricey I'd is them for varmints, I still want to shoot one into a deer and see what happens. I ran out of the ones my buddy ave me but soon as I get a chronograph I'd like to do some testing.
Hope hornady makes a 45 like the 50cal they just released.