Made it out to the range today and had some interesting results.
Rifle = Howa action, 25" Chanlynn 1x8 med palma barrel, Dead Air Sandman S suppressor
Cartridge = ADG brass (4x fired, no anneal), CCI 200 primers, IMR 4166, COAL of 2.86" (mag length)
Atmospherics = 5550', 78*, bright sun, 3-5mph from 10:30
Labradar
39.5 - 3029
40.0 - error
40.5 - error * pierced primer (happens sometimes with this rifle although usually with small primers)
41.0 - 3110
41.5 - 3129 * slightly stiff bolt
42.0 - 3197 * blown primer * Stopped test
View attachment 295782
Looking at my target, I have a feeling my node, if it is safe, will be in shots 2-4, ending at 3110. Really unfortunate that 2 of those 3 had an error on the LR. After the blown primer, I went back to shooting a few more of my typical plinking load which is a 147 eld-m, in the same lot of ADG brass and primers as above test and 41.7gr of RS Hunter running 2700. No issues with any of those fired before or after the test rounds.
I think I will redo the 39.5-41.0, but with 3 rounds each instead of 1, and at 400yds.