My user name and password are the same on 21 xbow forums, got nothing to hide. Imho, you guys are missing out by not getting into this site, the info in here is priceless. They do all kinds of tests on every b-head known to mankind, from penetration, accuracy, durability, ect. One could spend thousands of dollars and gawd knows how long figuring all of this out for yourselves. I'm a member there and honestly didn't know you gotta register/ log in to view the data. To each, his own.