The web says the nut can be 50-70 ft pounds and I've had a few that were that tight.
I don't have an action wrench and a barrel vise wasn't optimal so I improvised.
I used a piece of 1/4 x 2" flat bar 18" long and cut out the shape of the recoil lug in one end to make my "recoil lug wrench" to go with the nut wrench.
The recoil lug is keyed to the action
My lug wrench goes on first along with the nut wrench.
I can loosen or tighten, wrench to wrench which makes better sense to me anyway..

I recommend you put on a new nut!

"Camping places fix themselves in your mind as if you had spent long periods of your life in them.
You will remember a curve of your wagon track in the grass of the plain like the features of a friend."
Isak Dinesen