define "flat" as extreme spread?? if flat is 0 from 170bar to off reg. "0" will never happen..imo, but what is happy 5-10- 20 es??? my fx 22 crown (with no wind) will shoot a 3/8 hole @ 40yds.but a 10fps increase will raise point of impact,as will a 10fps decline lower the poi. that being said...