I bought some 35gr (all I could find at the time). Couldn’t find any load data for that weight for 223. I loaded up some light loads and shot some stuff, water bottles, small pumpkins, apples, paper etc. I found them to be very explosive but not any more so than the v-max.
It’s not really a fair test because the Varmint Grenade’s were behind a light load and the v-max was a developed load I use to hunt with and a heaver bullet.
I would love to get some in a 55 to 60gr and try them in my 223 and 22-250.
They claim velocities not a problem but I would like to push some out there at 3000+ fps and see for my self. I would think they would be fur friendly because they seem to disintegrate completely with very little provocation but I was shooting this stuff at 50yds and don’t know what would happen when velocity drops off.