Thread: Suggestions for .204 re-barrel

Curently have a tikka t3 varmint in 204. MAE full barrel suppressor but the barrel has been shortened to maybe 19".... Not happy with the velocities im getting with 40grainers due to the short barrel. Suggestions for a future calibre? Preferably uses same bolt face but not to worried. This is purely a varmint gun and will not be used on deer sized game. (unless one pops out 10m away like the one in the photo haha). Open to wildcat ideas and will be loading ammo myself.