You trying to insult my intelligence by repeating like is like very funny. I'm like totally embarressed now.

i never said you change multiple variables.I stated that you must try other variables for a valid test to be conclusive. Without tryingmore than onevariable and only looking at one aspect you are not doing a valid test. Sure you prove one point. But still leaves the door open for everything that you ignore in the test.

Here is a meaningful test to me. Start off with everything the same with exception of weight. Then, you change a variable like diameter of the lighter arrow. Then, you change another variable and so on. This does not muddle the waters. It clears things up and gives a good picture. Ashby actually does that with his tests.

Of interesting note from Ashbey is concering extreme FOC arrows. Specifically carbon. Arrow Lethality Study- 2005 2005:
Quote:
"All indications are that extreme FOC arrows do, indeed, offer a substantial gain in arrow penetration...... what little data at this time is suggestive that only the flexional characteristics of carbon shafts allow one to achieve an extreme FOC while maintaining good arrow flight" And later ... that it may offer highly significant gains in penetration when boradhead/arrow integrity are maintained."

This sort of testing by Ashby gains a great deal of respect from me and is of something that should be noted and of worth to people who like to use lighter arrows.

This probably explains why companies like CX are now making arrows with weight forward design. They've realized that a weight forward arrow offers better penetration. I believe another manufacturer also offers 25 gr screw-in inserts for carbon arrows.