If you're asking what's in the Glen Del that will destroy the arrow, I've seen others post that there's a steel plate or something to that effect somewhere around the brisket area... I've never shot on one, let alone tore one apart -- but that's what several others reported on a similar thread.

As far as a good broadhead target, I'm not sure. The Glen Del may be your best bet there. I use a Morrell Yellowjacket to make sure my broadheads are impacting the same as my field points, but domost ofmy repetitive shooting on the Bionic Buck or other bag targets designed for field-point use.