Not to hijack the thread but to Walt, I would use 4 blade on your bear hunt. I have some experience with BB and they are not hard to pass through but have hair and fat like you have never seen. It is nice to have more than a slit for leaking.
Hawk, I touch up the bleeders and assure they are shaving sharp as I do with the head. It has been my experience that the extra internal cutting is great, the real advantage for me is the entrance and exit is a bit bigger and less likely to clog up. Just my opinion mind you.