RE: Two, three, or four blade
I've killed three deer with the magnus 2 blade heads this year. The first was a doe, heart shot, she ran about 40yds. The second was also a doe, double lung, she ran about 25yds. The last was a 9 pt, double lung and he made it about 150yds, over half of which was down hill.
In all cases the blood trail was ok, but not great. All were pass throughs. I will definately use them again next year.