What prompted the question - in part - is that the Owner's Manual specifically prohibits Hornady "high pressure" ammo by name. I guess "Superperformance" Hornady stuff is what it referred to, but I wondered about other non-magnum loads. This is my first Browning, so I don't want to screw it up.
Meanwhile, I bought some Remington 180 gr and Federal 150 gr Game King stuff to see what she likes - as soon as the temp gets above Zero for a couple of days so I can get out to shoot.
I bought the rifle from my LGS, so can't ask the former owner what ammo he shot.
Thanks for your replies, so far.