I did a seating depth test today on those 80 gn flat base Bergers. Just for grins all charges were thrown on my old RCBS Chargemaster 1500 with no second check or trickling up on the A&D.
shot at 300 yards off a rest and rear bag, cloudy mid 80's very light winds
group 1 - .060 from lands .643 MOA 2.018 height
group 2 - .040 from lands .322 MOA 0.507 height
group 3 - .030 from lands .579 MOA 1.601 height
group 4 - .020 from lands .439 MOA 0.964 height
group 5 - .000 from lands .600 MOA 0.882 height
looks like the RCBS claim of plus or minus .1 grains provides sufficient accuracy for a good load.
shot at 300 yards off a rest and rear bag, cloudy mid 80's very light winds
group 1 - .060 from lands .643 MOA 2.018 height
group 2 - .040 from lands .322 MOA 0.507 height
group 3 - .030 from lands .579 MOA 1.601 height
group 4 - .020 from lands .439 MOA 0.964 height
group 5 - .000 from lands .600 MOA 0.882 height
looks like the RCBS claim of plus or minus .1 grains provides sufficient accuracy for a good load.