I've tested 110, 125, 130, 147, 150, 168, 175, 190, 208, 220, 245
Only bullets that would expand properly to my liking were bullets below 130 gr.
The others are great for plinking and tinkering with subs.
There is just not enough case capacity to push bullets to expandable speeds at 100 yards.
There are new companies like Leigh High Defense, Outlaw State Bullets, Raptor and others that have bullets that expand an lower FPS but there is a trade of downrange KE even though bullet may expand.
If I were hunting any N. American game animal at 0-100 yards and the .300 BLK is my caliber of choice I would stick to under 130gr bullets.