Testing R26 in my 20” barreled 300 WSM with 180 and 200 Accubonds, 200 Partitions, and 190 and 210 ABLR’s. So far I can get to 2800 with the 210’s, but it’s a 1.5” group. In my rifle, the best I’ve done is backing down to 2700 fps and running them .10” off. I have not length tested the 190’s...