Just to throw in a little fat to chew on..........What do you all think about Bernie Pellerite's comments about tuning in his book IPA? Bernie discusses (very persuasively) all the different types of tuning. Bernie addresses all of these issues as ways to get the best groups for target archery. However, he also says that when tuning for broadheads, paper tuning is essential.

I believe his rational is that sometimes you get better groups when there is a built in paradox to the arrow. However, the best groups and the best arrow flight are not always synonymous. Therefore, group tuning may provide slightly better grouping for your broadhead tipped arrow, but not necessarily the best arrow flight. Therefore, the arrow will not deliver it's energy as efficiently as it would have it were tuned to shoot perfect holes.

I have to admit that I have always tended to agree with this thinking. JMO