As a big fan of the 45 cal Rugers, yes,, both gun can handle the same loads.
However,, for hunting,, you mentioned; "plan to load some faster high pressure rounds for it to use" and I wish to ask; What are you hunting, and what kind of high pressure loads are you concerned about?"
I went on an elk hunt this past season, and all I took was .45 cal handguns.
I cast my own bullets, and PC them. I load & shoot these rounds for accuracy,, and they are moving under 1200 fps. I'd have NO issues using them on anything in North America. I'm using a 280 grn solid Miha design, (454-640) bullet.
In my experience,, and following that of many other well experienced hunters,, this type of bullet & velocity will handle all of the game I can hunt easily. High pressure, (your words) ammo makes me wonder.
Can you explain?