Here ya go, rage-a-holics!! This guy does some real comprhensive testing on a lot of b-heads, yours is probably in there somewhere.
http://btreviews.proboards57.com/index.cgi?board=currentheadtest&action=display &thread=1186517355
Sorry you gotta register/log in, didn't know that, but it's worth the effort, there's a ton of tests on there and an xbow forum. This guy is trying to get these heads outlawed!!!