Factory offering would be 165 Barnes ttsx. I’ve personally witnessed many elk kills to that range and they shoot very accurate. I personally feel like if your hunting inside 600 yds the 165 Barnes/165 accubond is ideal for 308-300wsm on deer through elk sized game. If your looking to step up 180 ttsx/180 accubond. I use the kiss method, it saves me money and puts meat in the freezer. Best wishes to you!