Noob reply , Any tool that allows you to explore the potential accuracy of your chosen rifle also allows you to explore the possibility that your technique and not the rifle needs to be worked on
Went to walmart last night looking at paint rollers, none of them had the plastic end caps unless you bought the handle too, is that what yall did and then threw away the handle?
It is also a valuable tool to determine what pellet(s) your rifle likes while taking the way you hold it out of the equation as much as possible.... It will also show you what kind of accuracy your gun is capable of, and give you a goal to "shoot" for when practicing in the "real world"....
WOW!!! This really works!
so let me see if i learned. forward hand grabbing the support of the roller, other hand on gun (trigger) and... wepon rested on the roller?