Starting this new ,
Almost 500 shots through and bit of trigger tuning .
Today I scoped her with CP 4X16-40 and tested all pellets which I could push through with medium efforts
Distance 10 Yards , sitting knee resting ....
I am happy to say that if I do my part SDB Artemis can deliver similar grouping as my Diana 460 Magnum atleast at 10 Yards

Been long and no grouping shared so sharing the pics ,
Best pellets in terms of grouping in sequence as per my test
1) JSB exact 8.44
2) RWS SUPERDOME 8.3
3) PRECIPEL FT 8.7
4) GSmith Super Impact 8.5
5) GSmith High Impact 9.6
6) GSmith High Split
7) MSC magnum

Fitment wise SEQUENCE
United Shots
HSC Magnum
JSB
RWS
HIGH SPLIT
SUPER IMPACT
PRECIPELL
HIGH IMPACT
I know 10 Yards is not the distance to zero the scope and coment on accuracy but that's what I have for now.. Hope to get to test at longer distances in May .
Cheers
Pravin