Bear was the only game in town decades ago, but Muzzy really revolutionized hunting archery with their broadhead design, primarily the design of the tip...I've killed 26 deer with Muzzy 115grn 4 blade razorheads...best broadhead design invented to date...all you have to do is look at all the copycats since Muzzy introduced it.
Up until my heart surgery when my sternum was cut open, I bowhunted with Muzzy 115's on Easton 2413 aluminum with 70Lb draw weight, got complete pass throughs on every deer except a couple, including shoulder bones, ribs, etc...when I'd lift the body to drag or load it, the exit hole would drain like you'd pulled the drain plug on an oil pan.
Then just unscrew the broadhead, discard the inserts, clean it and install new razor inserts, mount it on a new shaft.
I miss it a lot...nothing like the rush of having a buck 15yds away and 10 feet down...so close you can see the nose whiskers...not even a flintlock gets the heart pumping like that did!