I've had modern BSA PCPs and a couple of Supertens - I may just be over cautious but, I never liked filling any of them to the max.
I put 200 - 220 in the modern ones and, the Supertens (with flat end bottles) 190bar.
They are all the same bottles, flat bottomed aluminium made by Luxfer, all rated at 232Bar working pressure, if your gun isn't happy with a 232Bar fill then the regulator isn't working properly but that's another story, don't get me started about R10 regs....
BSA Super10 addict, other BSA's inc GoldstarSE, Original (Diana) Mod75's, Diana Mod5, HW80's, SAM 11K... All sorted!