As my Grandfather said to me .Don't be a butcher when the correct tools are handy. My Father didn't say anything i just got walloped if i didn't take noticed of the cough before hand.
The cramp is absolutely more accurate. Coming from a target shooting aspect when real zeros are needed not minute of man because of the longer ranges shot.
How many shooters today have the tools to zero their peep sight to the bore before they do anything else like the front sight without firing a shot for both zeros.