...they use what is termed "recoil index" to measure what kind of kick to expect out of a gun.**********
A 30-06 has a rating of 1.0, which for many people is about the limit of what they can shoot multiple rounds thru comfortably.
A 243 BR is rated at about 0.4, a 270 is about a 0.8, etc.
The 600 Nitro Express is rated at 9.4.
9.4 times more punishing power than a 30-06.
Now watch the video.
FROM THE COMMENTS:
"The best is yet to come. There is a .700 Nitro Express!"*