So I got around to load development for 2 projectiles... Nosler 140 RDF, which I only did the first stage to find a velocity node, and then switched to the Berger Hybrid 130 AR OTM.

24" MPA build, Surefire 300SPS. Magnetospeed V3, and I used Labradar side by side with the V3 for the 140 RDF.

For the RDF 140, 37.0 to 37.5 grains of Varget gave me 2801, 2795, 2808, and 2803fps so I would have explored 37.3 grains.

For the Berger Hybrid 130: 37.8 gr Varget, CCI 450, .030" off the lands. 3 shot ES: 3, SD: 1.4

This gave me 2925fps and .312" for the group I shot, and I've never shot for groups, so I was happy. I'll try to post some pics

I tried 10, 20, 30, and 40 thousandths off, with .030" off the best, followed by .020"(.435" group SD: 9), then .040" off (.562" group SD: 3.1). .010" off was a .8" 5 shot group with an SD of 1

Now I have 50 rounds loaded to try at distance, hopefully I'll get results out to 1,000 yards. So far, I'm very excited about my first try at load development.

Scott