A guest of another member showed up at deer camp with a 300 RUM AI. Yes, has said it was an Ackley Improved Ultra Mag. I asked to see some of his handloads but he only shot factory ammo. You see, during the process of firing the case forms to the sharp shouldered Ackley shape which is so much more efficient that he picks up a couple hundred fps over the same ammo fired in the original chamber.
As John Lovitz would say, yeah, that's the ticket.
