I am currently shooting 125 grain jak hammers and I am considering going to 75 grain wasp hammers my question is penatration my arow weight is 390 and 340 respectivly and my speed with the 125 is 250 fps thru the pro shops chrony and 265fps with the 75 grain head out of a 27 inch yukon XT set at 63 pounds looking to change because I resently bought a T@ blind and I am consurned about shooting mechanicals thru the mesh windows