I' m going to avoid the mechanical vs. fixed debate, but I would like to add in something that was missed with the " compass" analysis.

One advantage that " chisel-tipped" broadheads (i.e., muzzy construction) have over cut-to-tip heads is that they produce holes much larger than the diameter of their blades. The tip on these heads is designed to pull in tissue rather than slice through cleanly, so that when the blades pass through, they' ve essentially " reached out" wider than their diameter.

Think of it this way: With one hand, make a circle with your index finger and thumb (the OK sign.) Drape a tissue, etc. over the circle. Now, imagine that your other index finger is a chisel-tip broadhead with blades starting at the second knuckle. Push the " broadhead" into the tissue, through the circle you' ve made. Watch how the tissue is gathered in as the " broadhead" penetrates, and notice at what point the " blades" (your knuckle) would begin to contact the tissue. Once the tissue would be cut, you could flatten it back out and the hole cut would be much larger than the diameter of the blades.

Just something extra to consider...