I have that same rifle. I honestly don't shoot it much. When I did it put three shots in an inch at 100 yards using the factory ammo my Dad had it sighted in for.
I'd check the bedding first because mine needed attention there due to the age of the wood.
Keep in mind when handloading. These rifles direct gas down the left raceway of the receiver with no safety flange at the cocking piece in the event of a fired case rupture. Not a big deal, but something to be aware of.
Good luck and fun fine tuning. They're remarkable rifles.
