Akjeff,
Frank Barnes cartridges of the world lists:
140 grain @ 53 grains of 4350 = 3000 ft/sec
160 grain @ 50 grains of 4350 = 2750
175 grain @ 49 grains of 4350 = 2680

I don't handload at all so my experience has been limited to factory loads. Norma, S&B and RWS.
They shot ok in my double.
Superior loaded up 175 grain hornady's in a mixed load box and we found one that shoot's like a bolt action. I have no idea what it is or what's the velosity. But the 175 grain bullet shot best in my gun.