45ACP is 40 cents a shot for the plain stuff, half a dollar and more for the fancy stuff.
Cast, we are talking about 6 or 7 cents a shot depending on how long ago I bought the primers (longer ago, cheaper the price).
I have a .310" bore 30/06 that doesn't shoot copper bullets accurately, but I can cast .310-.311 bullets for it and make it accurate.
Its almost impossible to shoot out the throat of a rifle with cast bullets.
I can not only afford to shoot all day, but moderate recoil means I CAN shoot all day.
Some cartridges were originally intended for cast bullets (38 Special, 45 Colt), and receive no benefit from jacketed bullets.