I've done some searching on here and on the net about the need for a level on the scope to prevent canting of the rifle. I think I now hold the opinion that if one were doing bench rest or field target competition that a level would be essential. I also read that folks on here found their groups with a PCP, even at 25 yds, were tighter when using the scope level. My interest is in pest control for dairy farmers. I haven't kept a record, but most of the shots I get are at least 40 Yds and sometimes out to 80 yds. To other pest control folks or those shooting the distances I have identified, would a bubble level on the scope make a practical difference in my potential accuracy??