I tried Retumbo instead of my H1000 & got more speed up to 3400 ish but the 90s couldn't cope.
I will do some more testing & drop the velocity back.
I have a few more loaded with H1000 & will fire them this weekend at a medium LR shoot.
The H1000 pushes them nicely at 3100 ish, very accurate, but we all like more speed
I would say your barrell twist combination is too hard on the 90s, I HBN coat my ones, that may make a difference ????