Hi all, as usual maybe I'm overthinking this but here goes. Ok cast some RCBS 45-225-RN boolits and sized em to .452" awhile back and finally am getting around to loading some .45ACP and have run into some problems with seating and taper crimp on these guys. First off I'm using a Lyman M type expander with just enough flare to clear the boolit, after sizeing, priming, expanding and charging with 5.0gr of Bullseye it came time to seat the boolits to 1.270" in these once fired Federal case's . Well they are seating crooked with one side of the boolit touching the case and the other a bit clear of the case and are visibly not centered. Ok, checked the seating punch and it did not quite fit the boolit ogive quite right so I rooted around and found that my RCBS seating die I use for the Auto Rim had one that fit nicely. Tried again with the same results, ok perhaps when I taper crimp them to .469" things will straighten out, nope still not centered and still with a bit of a gap on one side. Ok, lets look at the boolit, below the grease groove it measures a nice .452" and just above the grease groove .442", ah-ha here's the problem the boolit tapers down to below the normal bullet diameter past the grease groove. Ok, no problem as we all know most production guns do not headspace on the case mouth anyways and the extractor holds against the breech face tightly enough to let the fireing pin give the primer a lick, so I then reduced taper crimp till I had brass to bullet contact all the way around, crimp wound up at .466". What am I doing wrong or should I just shoot em and see what happens, perhaps much ado about nothing? Any thoughts on this will be appreciated!