The pro shop was playing an interesting ad video by Steelforce one day. They had what looked like a Morrell bag target setup with a big foam block several yards behind it. They were shooting Steelforce, Muzzy 100 3-blade and Rocket Steelheads into the bag on carbon arrows from a 70 pound compound. The Muzzy and Rockets both came to a screeching halt after penetrating a few inches. The Steelforce zipped through the bag like it wasn' t even there and stuck in the foam block. Then they shot the Steelforce at the bag with a 50 pound recurve. Again, it zipped through the bag and stuck in the foam block.
Of course, Rocket would' ve just been using the foam block to ' prove' their heads penetrate deeper than Steelforce. But having to use a tape measure to tell the difference in penetration from one head to the next in a block of foam is one thing. Seeing one head stopped cold in a target and the other one whiz through that same target and keep on truckin' ...even from a bow that puts out a LOT less energy.... That' s impressive.