Yes the recoil of the 500/416 is greater. I own a 450/400 3 inch. The 500/416 is just on the edge of what I like.

I am a big fan of the Sweet 40s. .408, .411, .416. All are long, good penetrating bullets. The 500/416 will give you a leg up in velocity from my 450/400, but the trade off for me isn't worth it due to recoil.

I feel that the 500/416 will become a great double rifle standard. If I had one it would have to weigh 11 LBS. for me to be comfortable with the recoil.

Now felt recoil is unique to each individual. I suggest you try each if you can. The best double rifle is the one you like and own!