I shoot 120grs. 777 in my prohunter,but it is setup for overall performance. That is,from 50yds-to-250yds. On the long shots you need all the power you can get. It shoots great with a shock wave,and 100grs.777,but it really starts to fall apart past 160yds. So if you are limmited to shooting 150yds. or less,100grs,will take out anything in the woods. You just need the extra push to get the 200-250 performance.