As I try out 5.53 and 5.54 diameter pellets in my Marauder, Octane, Stormrider and home rifled Gamo express shotguns, I'm starting to get great groupings all around with 5.53 and 5.54 diameter H&N Field Target Trophy pellets. I think any 22 caliber owners out there should give these larger diameter pellets a try!