I cannot. I have a 22 and 25 cal Cricket rifle and both are tuned by Allen Z. They make shooting accurately very easy. I also have 4 different Hatsan PCPs. All are tuned and heavily modified with valve work, regulators with large plenums, SSG and crowned barrels. They are heavier and longer than than the Crickets. But when I shoot groups the groups are pretty much the same size as the groups I shoot with the Crickets. Past 100 yards the 30 cal Hatsan is the most accurate of all my guns. I will also add that when my 25 cal Sumatra is shooting in the sweet spot of the power curve it will hang with any of my rifles as far as accuracy. So I guess my PCPs are limited by me and pellets