Kind of hard to answer,I don't shoot known yardage for practice and don't try to guess yardage on an unfamiliar course, I try to let things fall into place and let the arrow go. If it looks right under hunting circumstances I take the shot, if it doesn't look right I wait until the shot develops or the animal leaves/or busts me,as far as the older guys go they had a business interest in hunting,I think you risk more when more is at risk,(hope that makes sense.)Does that make taking questionable shots alright? Certainly not,even if a lot of the practice at the time was on field archery courses that had some far distances,not 3D courses with "ethical hunting distances" unfortunately the respect for the animals didn't seem to be there at the time,and this type of thinking eventually led to the seasons, limits, and laws we have today,and thankfully so, or we may not have the animal populations that we do.Wait for your do-able shot to happen,unforeseen circumstances will sometimes bite you no matter how prepared you are,don't take anything for granted and be prepared for the worst,it will often happen.