Just bought a 300 browning win mag. Looking for the best elk load.

180 Partition over Re22, WLRM primer with WW brass.

Or, 180 Swift A-Frame over H1000.

Good luck and have fun working up loads. What powders do you have on hand? Bullets? Or are you just beginning to shop?

I have used 180 partitions over H4350 with good results. I just loaded up some 220gr partitions last night, that I am going to the range with this weekend to see how they shoot. I loaded them over 65gr of AA4350. I have two 300WM, a m70, and a H&R Ultra bolt action. What is your Browning, BAR? or bolt?

DGK

At long range, a 300 mag becomes a 30-30 due to velocity loss. UNLESS you use a heavier bullet. Personally I like the 220 Nosler partitio in 30 caliber.