So the reality of what a weight of an arrow can be summed up simply by the Kinetic Energy Formula. Most people think that a heavy plus 500 grain arrow out penetrates a 400 grain arrow. Not the case. Speed kills but so does weight, so what's the happy median, play with Kinetic energy formula and you will see that there is a point of diminishing returns with a heavy arrow, also not enough weight to speed ratio. Depending on the Lbs of weight you draw, draw length, and weight of the arrow, you will be surprised by what is "ideal" performance in an arrow weight. Most bows as an example will peak at energy for example 70 Lbs 29 inch Draw 300 FPS around 445 grains of arrow weight. Now depending on one's draw length, and weight it will very. Then you can go down a rabbit hole of broadhead performance, shaft diameter ext, and helical of fletching. By the way the more twist you put on a fletching up to 3 to 4 degrees the better arrow stabilization you have, but the faster it spins the more fps you lose. The faster arrow is straight Vain, but a more stable arrow is 4 degree right helical. Also if you shoot into plywood testing right or left helical the only difference in stability of the arrow is nothing, but you will see a left helical loosens the broad head due to the thread pattern of the broadhead, lefty loosely, righty tighty of the threads. A right helical the broadhead never loosens up due to tightening upon impact the threads in the broadhead tighten into the insert. So run the formula and you will be surprised at what you find. Also 60/40 weight forward is a better arrow mason far as plus 55 yard shots. So find what works best for you. Also fixed blades out penetrate mechanical broadheads all day long period. More importantly make sure your shooting the correct spine of arrow, it's easier to tune a heavier spine shaft past 40 yards than a spine that is to light. Good luck happy hunting