Leupold Scope cam to the round super and subsonic
I started with a leupold scope 3.5x10x40 mil-dot first focal plane M3 knobs, MOA clicks not .25 MOA clicks because of the big drop of the 300 whisper, worked up my loads one 150gr supersonic (2200 FPS) and a 240gr subsonic (1050 FPS). I worked up all my data via my RCBS and Seirra programs. Than had Premier Reticle cut me a cam Knob for the scope with the supersonic data on the bottom have and subsonic data on the upper have. The two data is off set to line them up. So i can have a gun zeroed and cam for supersonic than add silencer and jump up to the subsonic data and turm cam to range and now zeroed for subsonic, than take silencer go back to supersonic ammo and turn range on lower half of cam to range and zeroed again for supersonic ammo. Works great i drop a PVS 22 in the front of the scope and than I'm ready for the night. Only point i would say is, with range having to be right on with the subsonic loads go with the first focal plane scope to make milling easy on you for those shorter ranges, I for one use lazer range finder but you always don't have time. Also don't kid yourself in subsonic loads limit yourself to 300 meters. The leupold scope i use has 56 MOA in one full turn that will get you well pass 300 meters but i limit myself to 300 meters and it is broken down into 25 meters marks. This can be easily done with any scope with target knobs and don't have to have premier reticle do it. I have worked up the data and printed it out on paper with my Cad program and used clear scotts tape to put it on my knob, than just zero and than loosen the knob and line up range you zeroed at and your zeroed. Hope this helps
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