In Scandinavia, where everything is taxed to the hilt, we used the 4 *** sight as follows :
1 for 25 - 30 meter accuracy using around 3 grains of Norma R1 on 200 grain wadcutters ,for pinpoint stuff.
Yes, it turned the .357 into something like a .22, but jeez the groups were really tight !

2 .3 .4 were for field target shooting, as in:
Foreground , Middleground & Background.
Say, with a 135 grain SWC.
Our field shoots were at undeclared distances out to around 150 - 200 meters.
Because then, we were not wasting money, on close shots, that did not need the full .357 load.
That way we could save powder, and shoot more.
People used different nail varnish or model paint flicks, on the cartridges, so the color indicated weak, medium or full house loads.
Having learned more English !
Our Field shoots, as said were out to 200 meters.
You had 30 seconds to determine , in your 5 people group, the distance to the Target / Targets !
Sometimes we had 2 groups of targets, at different distances
Anyway, irrespective of it was a head, or a 2/3 target, or a full body target.
It did not matter.
as long as your shots hit the target, head, knee or toe
It was a hit !
If you hit, outside the target outline.
It was a MISS.