My take...not a good place for use with Skinners. May not apply to ALL indoor ranges, but results were not good.
Started out at 25 yds and result was Bad! About 6" group? Rear aperture all but disappeared at that distance. So, I pulled it in to about 15 yds and got less than 1" group because rear aperature then became clear. Tried three different loads with no better results at 25yds. Lighting is very bad at my local range at distance. I decided that this particular shooting facility is better suited for close up SD practice. Got home and pointed my rifle outside...crystal clear picture. But I can't shoot in city limits! Bottom line is; till I can get up to the summer cabin, shoot outside and not worry about being hurried because of range time clock ticking, will not return to the indoor range again except for handgun practice.

