Myself I am a bit of a Hawke fanboy, I use one of their 4x32 mil dot re-parallaxed to the same distance and as you say, very good for between 10 to 30 yards on a 30s.

I have been meaning to try the SMK similarly adjusted on a rimfire project that I have on the go and if you don't mind me asking, where did you get it from please.

Thank You.