That is very good velocity?
My son uses 106 gr of Retumbo in the 378 case with a 30” 9 twist for about the same velocity.
110 gr of the old H570 will do about the same, but slightly better accuracy.
I'm using 102.5 grain of RL33 , with a 300 gr Berger hunting . I use Lapua Brass , and get 10 + reloading cycles on it . my barrel is a 30" 10 twist .