I use my 14" 223 Contender for PDs, it has a 4x Leupold scope on it, works great out to about 200 yds, then the scope becomes a limitation as the cross hairs cover too much and shot placement becomes a guessing game. I am thinking about chaning over to a Burris 3-12 x B.Plex, I think that would make me effective out to 300 yds. My gun is in the 290,000 serial number range - old model contender, Ez open, blue, the barrel is of the same vintage - high gloss blue. I only have 1 G2 so far but have several of the old models - in my limited experience the trigger on the old contenders is much better - especially for bench rest shooting and long range varmits.