FWIW; for the last 30 years I've been seating revolver bullets to the cannalure or crimp groove, disregarding OAL measurements. With one exception; a 357" cast SWC that has two crimp grooves and if seated out the bullet may not fit some cylinders (can't rmember the Lyman mold number off hand). I suppose a smaller jump from case to rifling may have some effect on accuracy, but in my experience it is very little (if noticable at all). I automatically think of .38 and .44 Specials shot in Magnum guns and producing very good accuracy. I prefer to try for consistancy in other areas for most consistant accuracy (but as I age, my shootin' ain't gettin' no better...).
My Anchor is holding fast!
I've learned how to stand on my own two knees...