I think that if you want to try mechanichals that you should try the rocket steelheads. These penetrate like a fixed blade, and you do not have to worry as much about kinetic energy. I feel that you are at an estimated 45-46 lbs of kinetic energy, which is not enough to make a humane kill shooting expandables. With the steelheads, you don' t have to worry as much about kinetic energy, and these are flat out awesome broadheads. I would give rocket steelheads a try. If you want to increase your kinetic energy, you could shoot a lighter arrow, or turn up your poundage. I also have a Hoyt Magnatec with the command cams. I set mine at 62 lbs and shoot a Carbon Express CX 200 arrow. These arrows cook out of my bow at 270-275 fps. I had my KE tested, and I am at 57 lbs of kinetic energy. I would either try Rocket Steelheads, or switch to a lighter carbon arrow like the pse carbon force or the carbon express cx 200 or 300
good luck
Buckkilla