Skunk,
Punching the numbers for the old 180@2700 load into a recoil calculator gave me 24 ft-lbs at 14 fps.
The real determinant, at least in my experience, is how well the stock fits you and how good the recoil pad is. You have to shoot the gun to find out
My .416 Rigby, in absolute, unequivocal terms, kicks much harder than the Blaser .300 Win Mag I shot a while back. You can run the numbers all day long and they'll always say the Rigby has about twice the recoil....
... BUT, subjectively, the Rigby was MUCH more pleasant to shoot, due to good stock design and a 1" Pachmayr Decelerator recoil pad. It was a big, heavy shove instead of a quick, sharp, unpleasant jab.
The gun's only half of the equation. The shooter, and the interface between the shooter and the gun, are the other half (or other two halves?
)
In any case, it probably won't kill you.
I wouldn't lose any sleep over it.
Best,
Joe