(Bro-in-law) is shooting a mathews Switchback(05) 74 lb draw,29 in draw 27.75 in arrows @ 310 something.His arrows weigh in at 321 gr's.I'm shooting now same bow 28 inch draw 400 gr arrow at 280 ish.
Brother in law will not have his switchback for too much longer shooting at 4.36 grains per pound. My suggestion is shoot what is recommended here, and blow the doors off of him in the accuracy dept!
A slow hit is waaaaay better than a fast miss!!