Any accuracy reviews of 177 vectis

I am shooting under an inch at 50yards with Crosman 10.5gn domes, 925fps ave. speed. I didn't change my HS adjustment and tried some old RWS super points, 7.8gn(measured) and they shotgunned at 20 yards, too fast, 1082fps. I almost have my HS turned all the way down and only fill to 2600psi and it shoots this fast. I think this gun was built with the 16gn pellets in mind. Sorry but those are the only pellets I have tried. I am using this gun for fun so I probably won't be trying any others as the Crosman are such a good deal and accurate enough. I can consistantly hit a 2" spinner at 65 yards so I'm happy. I should mention that I cut the end off of my shroud and direct thread a Tanto onto the barrel too. The actual action of the lever action is awesome. Fun stuff.