In my .300 Weatherby, which gives very similar performance to the .300 RUM, I prefer a "premium" type bullet such as the Barnes Triple Shock, Nosler Partition, Northfork and similar type bulletsinstead of the fragile type bullets such as the Ballistic Tip and so forth. One of the bonded bullets like the Nosler Accubond, Swift Sciroccoor Hornady Interbond might be a good choice too. For deer hunting I like a 165 grain bullet.