Edgun Matador and Slugs??

I tried some Griffin slugs today 22 cal 21gr ldc cup base 920 fps,with the R5M standard. I

Only shot them at 70 yards off of a bipod.Aim point was where are the large arrow intersects the fine outer circle and referenced with my pinky nail. One group is five shots the other is 12 shots

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only shot them at 70 yards off of my bipod.
 
I haven't done any testing yet and I only have the R5M Standard in .25cal. To take full advantage shooting slugs at higher velocities, it's probably best to have the R5M Long. Try reaching out to one of the members here, jwrabbit123 (Lou). He has several posts about shooting slugs. I haven't seen him post much lately though and hope everything's well with him.