Not sure what your coal will be, my rifle is a tc venture with a really long throat. 24”.
I would research hex coating bullets, get your barrel good and coated with hex, and start around 48-49 grains and work up to the low 50s. I was able to go to 55 grains in Winchester brass, and only 52 or 53 grains in lapua brass.
2800 FPS in win brass
2700 FPS in lapua.
My rifle isn’t normal in the throat though, so work up slow.