Hello, I have a .40-63 Ballard A-1 Mid-Range. I was wondering how much importance nose shape would be for shooting 300-500yds? Bullets will be 330grs. paper-patched. I am leaning towards the original Postell nose shape but wondering if the elliptical shape would be better? Bore dia. on this one is .404" with a groove of .409". a patched bullet of .4045 is a tight push thru bore. Thanks!