I shoot Maximas and with my short draw length my arrows only weigh 336 grains, and they are fine with my bow. Mine are just above 5 grains/lb, and they make my bow a lot faster. As far as noise im not sure cuz i just bought a Guardain and it is prety quiet, but i would imagine you wouldnt be able to notice the difference with your allegiance either. I dont think it will hurt your bow as long as you stay above that 5grs/lb mark.