Our 3006's like the 150 grn bullets real well, but those are probably light for the 300 win maggy. Kinda like my 7mm rem mag likes the 139 grn BTSP Hornady customs., and now i'm working up some 150 grn load that are really accurate for it.. (just ordered Swift Sirrocco II's in 150 grn) hopefully I keep getting it better and better and..........