Seems like I remember a weather site claiming 19, so sounds about rightIf you were seeing your bullets blown 4-5 feet at 500 then you were seeing 15+ MPH winds. A 6BR would still be a couple of feet in that kind of wind.
I do currently load for 7 or 8 pistol calibers and a dozen or so rifle calibers. I don't currently own or load for any 6mm's, so I'll need dies and such, but I have everything else, Arbor press included. I have a goodly supply of BR primers in large and small, plus a good selection of powder.The key info has been left out. You have never mentioned if you load or not. If you don't load the 6BR and all of the PPC options are out. from what i heard the 223 has not got the long range you need so the suggestions for 222 and 221 fireball are out as they have less range than the 223. A good 22-250 with a twist fast enough for longer bullets than common. If you load a 6BR would be a good one. 220 swift, 22 BR . Making you e own ammo is the key. And buying a factory rifle may be counter productive. Ive had better luck buying a used rifle and have a match grade barrel installed by some one that knows how to do it. Probably not the guy at the gun shop/pawn shop down the road.