300 win mag, 27” barrel. Nosler brass, H-1000 powder, Berger 215’s. Here’s where I am in my load development. I found a great accuracy node between 76.2 gr and 76.8 gr, .020 off the lands. 76.2 avg velocity 2930fps, SD-5.4 ES-10 76.5 avg velocity 2943, SD-3.1 ES-6 76.8 avg velocity 2944 SD-5.5 ES-11 So I was planning on loading up right in the middle at 76.5 grains. My question is the next step. I’m going to play with seating depth. 0.010-0.040 in 0.005 increments. Do I shoot a long distance ladder test to look for vertical dispersion, or shoot 100 yard groups?