Re: Load development
I like to start .010 from the lands, if that length fits the mag then I do an OCW. Then I verify the OCW, then I fine tune with seating depth. One other factor I use at the beginning is to be sure I have the bullet diameter seated in the neck. For example my 6.5 creedmoor seated .010 from the lands is only in the neck of the brass about .160 not the .264 I wanted so I seated the bullets so there was .260 in the neck which put me at a .110 jump. I did an OCW at that depth and found a great node at 43 grains, no need to monkey with seating depth.