I have the Lee RNFP mold that casts 263 with my preferred alloy. I shoot them out of an 1860 Henry replica at about 1000. I'd love to do the same out of an auto. It was this bullet, at that speed, that got me digging into options to step up the 45 ACP. I have a few thousand policed brass, but have never owned an arm for them.
That's not a good bullet for pushing fast in the 45 Auto; it takes up too much case capacity and will require seriously high pressure to push to 1000 fps. You'd be a lot better off with a different bullet; if you want to stick with Lee molds the 230 TC is your best bet for a heavy bullet that can be pushed hard. The small weight difference doesn't matter that much downrange, but the velocity difference at safe pressures will be significant. You can push that 230 TC to 1000 fps from a 1911 safely with the right powder choice; Blue Dot is a good one.
