This (bolded)...
Shooting for score wouldn't hurt, either. Getting 75/75 with 15 V at 900 m means good trigger control, position, breathing, wind reading, mirage reading, ammunition, and rifle, and no "fliers"... I've never done that. (I think my best was 73-6 - missed two points when the mirage changed - but I know people with 75-15). Or getting 100-10X at 100 or 300 yds or m would show that everything was "on" also...