I've been using the PFI Rapid Reticle 3-9x on top of my Charger and have killed PD's out to 275 so far. Even spooked a few at 300 using addtl. turret clicks as calcd. from a ballistics program (20 MOA more than the 200-yd. reference line)--
It is load-specific (32-40 grainers at 1200-1300 mv), but sure works well for the Fed. Auto-Match i'm using now.