I've never used an AR on PDs but it sounds like loads of fun. In the past I've always used my Savage bolt gun in 223 Rem. My new 243 provides a whole new level of destruction on those critters.
To no one in particular, yesterday I drove down to Lamar on business. I'm back home tonight. I've never seen the prairie as wet and green as it is right now, or at least not for 30+ years. With all the rain we've had lately all the grass is green and there is standing water everywhere. Also, I saw VERY few antelope, much less than in years past. I think I only saw a total of 5 antelope the whole trip.