I tried them in my 280AI with IMR-7828ssc and I've used that powder with 160gr AB and Berger 168gr VLD. I couldn't get them to shoot. They shot great in my 284.
I tested them in mine, but I don't have a 1:9" twist but a 1:10". They worked Ok but needed to be jammed into the lands for me. I did use them for Fire Forming some RWS brass to AI and ran them out to 700 yards. I didn't know the velocity they were going but at that distance I used 5.5 mils to hit the 3.5 " bullseye. They shot better for me FF then when testing them in the first place FWTW?
Try them out, they are fragile bullets in any case, they turned inside out in the sand behind my target, and weighed around 59-65 grains.
