I don't know if they have a minimum, but I consider 400 a good starting point. My set up is Gold tips 7595 with magnus stingers 125 grain heads (429 grains). I feel it is very important to have a cut on contact head for an animal as big as an elk. Research has proven to my satisfaction that cut on contact heads out penetrate others. You give up a little in arrow drop, but I want that extra weight when elk hunting.