can't help you with factory loads, but I know 150 gr Hornady Interbonds and 56 gr Varget shoots small little groups in my factory Rem 700 300 SAUM. It has the Accuracy Innovations bedding system laminate stock. The 165 Sierra BTSP do well with H-4350 or reloader 17
Thanks. I just acquired a 700 Ti and it shoots the 165 factory loads really well. Guess I better buy some dies. Thought I'd try the 150 Rem factory loads. Nosler makes several 150s up to 200s for the 300 saum but they are a little spendy.
The 165 Sierra really did a very good job on a deer I got last fall and are inexpensive. I don't think you need a premium bullet for this cartridge. I bought mine to rechamber to a 7 SAUM but when it shot so good I decided to keep it the way it is and glad I did.