At full Group 3 ballistics it is Mark!
Clocks 570gn Woodies at 2157fps, but with a 30"barrel.
I use AR2208, its a very consistent load, but it goes over the Max Pressure stated in Quick Load, so only can be shot in a Ruger or similar type action - I will not recommend this load in a double.

In BPE mode its a different animal altogether, still know your firing 110+gn of BP though!
Not sure how my back would go using it in full Nitro mode, I can fire my 404 okay without to much bother afterwards - but there's a vast difference in recoil between a .404 & a 500NE!

Great photo of the rifle going off - marvellous!