This can be an interesting data base. The more members play along the more helpful it can be...
What pellet do you shoot, at what velocity, through what rifle and for what purpose?
4.52mm AA Field 8.44gr - 785fps - AA TX200 MKIII - FT
4.52mm JSB express 7.87gr - 810fps - Steyr LG110 - FT
4.53mm JSB exact 8.44gr - 830fps - AA S410 TDR - PC&Plinking
5.1mm JSB exact 13.73gr - 865fps - HW100 - PC&Plinking
In the past:
4.52mm AA Field 8.44gr - 790fps - AA EV - FT
4.52mm AA Field 8.44gr - 795fps - AA S410 TDR - FT&PC&Plinking
5.52mm JSB exact 13.73gr - 500fps - Marauder PCP pistol - PC&Plinking
5.1mm JSB exact 13.73gr - 995fps - Daystate Air Ranger - PC&Plinking
4.52mm AA Field 8.44gr - 775fps - BAM B40 - FT
4.52mm AA Field 8.44gr - 790fps - AA S400 - FT
5.52mm AA Field 16gr - 780fps - AA S410 - PC&Plinking
4.52mm AA Field 8.44gr - 900fps - Hatsan Mod80 - PC&Plinking (best accuracy of all pellets tested, reduced velocity and a mze tune would have yielded better results)
With all of these I achieved acceptable accuracy. (5 shot group over 25m outdoors would be sub 10mm)