Finally got the pieces together. First they sent me medium rings when I ordered high rings then the high ring set has the screws but not the clamps so I have to fish around in my parts box to find something that will work but get it done. The rifle is a Marlin XS7 that has shown very good accuracy. I ordered a 20 MOA base for a SA Winchester model 70 and that worked perfectly. Soon I am going to turn it on to set eye relief, focus and figure out how to sight it in. Planning on running 150 grain Hornady SST's at around 2300 fps pushed with 4198. Reducing flash by using less powder hopefully. I need to load some rounds up before I start sighting in but per instructions this should be easy (hopefully). Maybe get this done by Sunday night.