I planning on hunting whitetail does in southern Iowa. They are nice big corn fed deer for sure. My question is I am wanting to try Hunting Shack VLD loads and am not sure if I should go with 168's or 185's. I hope to be able to shoot to 500 yds, maybe 600 if conditions are perfect. Is this possibly a mute point as the new superformance 165 SST loads are cheaper and would seam to offer good performance. Thank you for any advice or personal experiences you relate.