I load develop kind of using a modified type ladder deal. When I get my load I like, I verify it with a three shot group. I go back in a day or two and shoot another three shot group. If they are both acceptable, I zero for it. During the whole process, I probably shoot 20 to 30 times total after I have finished load development. I dont trust the tables, I shoot the yardages. Maybe only one shot at each yardage, but I shoot each yardage.
Thats for hunting rifles.
The bench guns are totally different.