It is ok to not know what you don't know
I have A BSA 30 mm on my Webley. It has 11 intensity settings and the 1 thru 3 settings are really pretty small. I shoot 20 to 35 yds regularly with no problem. I feel that you can't beat a good set of cross hairs, but shaky as I am I don't need to magnify the error.
Cost of The BSA is about $40.00 american Good luck
Dwk54rak North Port, Florida, USA