I shoot the Beartooth 330gr .432 diameter with a charge of H322 out of a 444S. I have to launch it a bit over 2000fps to get good accuracy. Recoil is pretty stiff. I slugged the barrel to see which diameter bullet to get. I understand the barrels with Ballard rifling aren't velocity sensitive as the Microgroove barrels are to get good accuracy with heavy bullets.

Just down the road from The City of Lost Souls in the Land of the Blind.
Molɔ̀ːn Labé Skýla