I know a lot of people are scared to bump their barrels in fear of a POI shift. However I did some testing today with my .30 Maverick and even after grabbing the gun by the end of the barrel and shaking it violently in between shots it still held it's POI Grouping. Mods done recently include epoxying the carbon sleeve to the liner, installing a bullet central tensioning kit, and installing a black arts design bottle/barrel band. I think the barrel band definitely has the largest impact. This is a very good quality product and the owner even sent me an extra fastener after I dropped one and lost it. Now I'm not so worried about POI shifts day to day or after I bump into something. Just thought I would share.