I have been casting for about three years now. I started with a lee 200 gr .450 conical mold for my 1851 navy, and recently started casting for my 45-70 with the lee .457-405. My mold blocks aren't perfectly aligned giving me a size of .455 at narrowest and .464 at largest. I know round is ideal, but I cast some up last night and a few I selected for testing grouped in one hole at 30 yards. I don't size yet as I pretty much just got started with serious casting and reloading. Any thoughts?