Seating is key with that bullet,
I recieved advise from Ty, to seat the end of the neck too the middle of the top band. It works.
Happen to run into a gent at the range one day trying that bullet in 243, gave him the advice, a few months later bumped into him again at a local shop and he commented that it did indeed work for him too. Sub moa at 200.
Luck too ya,