Off topic (sorry) but sad to see, as it seems to go against the origial concepts of the competition ie "big game" competition and using mostly vintage rifles in a target competition. The lower energy rates were probably designed to allow a normal load of a particular cartridge in a class to be included at the lower level, not downloading larger cartridges to match a lesser cartridge.

I prefer my rifles to have sights shooting the "real" cartridges, not downloaded less powerful "squib" loads. I wonder if the "competition" rifles are permanently sighted in for the "squib" loads? Or they manage to get normal power loads to match closely enough the 'squib' loads? Or they resight the open sights if they ever hunt with normal loads? Or they hunt with the 'squib' loads? Lots of questions.

PS I did notice when taking photos, how some rifles did not recoil much at all. THe thumps on my shoulder felt much more severe than the little jumps of some rifles.

Of course it may be the perspective of being behind the butt or not!