I am having mine reamed to 454 by Wayne. I'm just afraid I will goof and get chatter gouges in the throat. Feel more confident having a professional do it, and he has a really reasonable price for doing it. We had a brief discussion via email about it, and he agreed that, since I want to still be able to shoot the 45LC with some kind of accuracy, the 454 is a better way to go. The jump to the lands is just that much longer for the 460. In that case, any rounds you load that are little out of center could cause throat and accuracy problems. If all you want to shoot is the 460 Smith, I would say go for it. I did not want to have to buy a complete new set of dies, and with the 454, I can use the 45LC dies, with the exception of the full length sizer.