Cousin finally tried Leverloution in his 22DTI, temp was 80 degrees, he shot 30.5 grs under a 60 gr NBT and registered 3430 fps avg. 31 grs was hot and reached 3480 fps. 24" SS barrel. Figured he'd get more powder in the bigger case.
The 60 NBT is a flat base if I remember right, maybe more bearing surface?
