Initial results and sighting in with my new Athlon Helos BTR Gen2 420x50 optic. Testing is completed on a Savage 110 Swicthback chambered in 6mm ARC, with a 22" tube, 1:8 twist. We test both factory ammo and the 87gr Vmax from Hornady with CFE 223. Testing at 100yds, velocity gathered via Labradar.
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