I was looking for a neck sizing die in 45-70 for my single shot rifles and came across info that a Lee carbide crimp die in 45 Colt would work. Ordered one, tried it and it almost worked but did not size the neck down to hold .459 properly. Ordered a 45 acp one and it works great. You can size just the amount of neck that you want by putting a spacer over the case and adjusting the die. Make sure you order the "45 acp Lee carbide crimp die" if you need one.