LAST EDITED ON Aug-04-10 AT 04:55PM (MST)[p]I used to think so too, and I respect your opinion Pete, but with rangefinders these days, I don't see trajectory as much of and issue.
What changed my mind was a trip to Africa. 3 of us went. We were all shooting 70lb bows of comparable IBO speed. I shot a 420 gr arrow, one buddy shot a 455 gr arrow, and one buddy shot a 370 gr arrow. The light one was a short draw guy at 26" and he too was worried about speed. We all shot the same Slick Trick standard broadheads.
The guy who shot the 455 gr arrow shot through everything. I shot through all but one critter (ostrich, you wouldn't believe that breastbone!). The guy with the light arrows only shot through a duiker and an impala. All the other critters (usual plains game) had only one hole. He even had to follow up the zebra with a rifle due to lack of penetration.
To each their own, and if all we are talking about is deer, 360gr arrows are fine with a sharp broadhead. But with anything bigger than deer, I'd personally feel undergunned. I also hunt in an area with very low deer densities. I could hunt all year for one fleeting opportunity. If that happens to be slightly quartering to me, or if the angle is not perfect, I'm glad to have that extra weight.
Look at a wrecking ball taking down a skyscraper. It's a big, slow moving, but really heavy, mass that carries a lot of momentum. It does a hell of a lot more damage than a smaller, faster projectile would.
