My Winchester 30-06 prefers the Hornady 180 gr. SP Interlocks. I use this load on all game that I hunt and don't get much meat damage.(with well placed shots) Usually the Vanguards accept most good quality ammo, but naturally some will shoot more accurately than others. The fact that the Accuguard has a #3 contour may have something to do with Weatherby's choice of ammo for your 30-06. Usually 30 calibers like the 180 load, so you might try at least one box of Hornady, Federal, or Winchester cause like Erick mentions, it drops deer like a hammer.