Savage 12 F/TR .308 shooting 600 - 1000 yards.

Help me decide which one I should get between these models. Or if there is another scope preference $500 is the budget.

Bushnell Elite 4200 Tactical 6-24x 50mm Side Focus *Mil-Dot

Vortex Viper 6.5-20x 50mm Side Focus *Dead-Hold BDC

Vortex Viper 6.5-20x 50mm Side Focus *Mil-Dot