As far as the increase in .2gn goes, I would add that if your scale is only capable of .1gn accuracy as most are then the .2gn may not show an increase as eg a 65.2 gn load may in fact be a bit high by .1 and a 65.4 load may be .1 low for the same actual 65.3gn. Extreme eg I know but for that reason I go no tighter than .3 for my med to larger cases.
While I might try pushing through the 65.5gn for interests sake I am looking for accuracy first and would probably work in the 64 - 65 gn loads looking at seating depth as an adjustable.
Von Gruff.
