Seating Depth Question 180 gr. vs. 200 gr Accubond

Discussion in 'Reloading' started by 300winnie, May 23, 2006.

  1. 300winnie

    300winnie Well-Known Member

    May 18, 2005
    I have a load worked up for my .300 Winchester Magnum utilizing the 200 grain version of the Nosler Accubond. It shoots right at m.o.a as an average. Since I consider myself a moderate junky, I can't leave well enough alone in search of the perfect load /ubbthreads/images/graemlins/smile.gif

    Anyway, throughout the course of this year I have been trying to get the new Scirocco II bullets in the 180 grain guise to fly luck here /ubbthreads/images/graemlins/frown.gif

    I was at the gun store last night and on a whim I picked up a box of 180 grain Nosler Accubonds to try.

    My question is this:

    Using my Stoney Point Comparator, should I seat the 180 grainers to the same comparator length as the 200's for a starting point (Should this be the same amount of distance from the lands with both bullets)?

  2. Eaglet

    Eaglet Well-Known Member

    Feb 2, 2005
    my owen preference is to just use my OAL Gauge
    from Stoney Point, that way I know what I'm getting.

  3. ATH

    ATH Well-Known Member

    Oct 7, 2003
    I'd seat them so the bearing surface is the same distance from the lands. After getting a good charge worked out you could play with the seating depth if you're really into experimenting for improvement.
  4. Varmint Hunter

    Varmint Hunter Well-Known Member

    Dec 26, 2001
    What you should do is measure the throat using the OAL gauge w/ bullet comparator and a bullet from the new box of 180's. Then seat your bullets to the desired depth.

    Ojives often vary from bullet to bullet within the same style and manufacturer. I have also noticed that new bullets don't always have the same ojive as older bullets that have the exact same weight, shape and item number.

    Things change - I'd check the new bullets first so that you can be sure of what you are actually getting.