Someone with a copy of the big book will come along and give you an idea of when it was made (I'm going to guess somewhere in the 1930s) but with regards to ammo-- don't use anything marked "+P" in it. As for heavier grain bullet...that's not an issue. You'd be best served by shooting exposed lead (unjacketed) bullets in it.
Actually, in certain scenarios, lighter weight bullet loads are much more punishing on some handguns. It's more a .357 Magnum thing that doesn't really relate to your revolver. But it's worth noting that bullet weight is but one part of the tales of a load. A heavy bullet at a loping pace typically ends up being a "soft" load, for both the handgun and the shooter holding it.
Attention Brass rats and other reloaders: I really need .327 Federal Magnum brass, no lot size too small. Tell me what caliber you need and I'll see what I have to swap. PM me and we'll discuss.