I have a friend who uses these Hammerhead bullets from Garrett Ammunition and they shoot very well with awesome results on critters. I like the weight and style of the bullet. Is this Garrett's own design or is there a company that make them for Garrett? On their website they only offer loaded ammo. . .were could someone get these bullets to handload? I would like to try these is some of my handguns. Any insight, please let me know. Thank you.