RE: Arrow penetration vs. weight
When I saw this post I started laughing my a$$ off. This post is eerily familiar to me..
To test penetration basedonly onweight youhave to have the same diameter shaft and spine the same for all the arrows. If not the thinner shaft will more than likely out penetrate the thicker shaft every time. In addition, the arrow with the higher spine will loosevelocityslower. The more "flimsy" arrow will oscillate more upon contact with the media increasing the side friction on the shaft due to the bending of the shaft.
Am I explaining that right bow_hunter44?
I found that out with the experiment I did for the "Physics is Fun" Thread.
If you wanted to test for penetration based on diameter than you would need the same weight and spine for each shaft.
There are a lot of variables that you have to take in to account based on the test you are trying to conduct.