Mike I am not sure what kind of answer you were looking for. I have seen a bunch of threads stating the virtue of the two blade and how well it penetrates. All I can tell you is that I shoot SHARP 145 grain Snuffers and have had complete pass throughs, enterance wound and an exit wouund on all the deer I have shot with Snuffers. They were mounted on 2216 aluminum and cedar shafts. Last year I shot clean through a Florida pig. CourseI was only 10 yards away and was shooting African Ebony Reed Wood (Gold Tip Carbons) out of a 54# recurve. The answer I think you need to look for is can you get them
hair popping SHARP and can you put the arrow in the RIGHT spot?

Ted A. Young AKA COB