I'll only say this...my buddy is shooting a little over 70# and is somewhere in the 290 fps with his Matthews and he doesn't even worry about the shoulder blade. I've seen him shoot through more than one shoulder blade and have complete pass throughs due to so much kinetic energy. I'm not sure I've seen a 60# bow do that. I think that's great that you found a bow that you are super confident in...because that is the name of the game. I agree that there are many people who kill a deer with their brand new bow and think there is something better out there this year and go out and buy a new one when their 1 yr-old bow is in perfect condition!! Plus it already proved true in the field!! Like I said, if you are confident in the field with your bow, that's great! But, like physics, more poundage means faster arrows...which means more KE. (formula...KE=1/2 mv2 - that's one half times mass times the velocity squared to get the kinetic energy.)
Thanks for the opinion Hardcore...good topic...
Good shooting to all of you...