RE: 4 blade COC BH?
I've had good luck with Ribteks and Wensel Woodsmans, but I figure there will at least a few Ace Standards in my quiver when I go to CO for elk this September. I'm sticking with 125 grain--haven't had a need for the flying butcher knives so far, although they are available from Ribtek and Ace (I have some from Ribtek--they almost look like a spear head).
Chad