ktc, I don't know if you are joking or not, but both calibers are excellent elk killers. If you are not joking and you just don't like the . 300 RUM, why don't you try to come up with constructive criticism instead of some BS answer. I don't own the .300 WSM just yet but I will someday so I am not responding to try and bag on it. I am both a gun and archery nut and love to reload and build my own arrows. I for one love that hunters have many many choices with both guns and bows. If money was no object I would own one of each of everything. Each and every cartridge has its pros and cons and most have thier own niche that appeals with certian type of hunters for what ever game they are pursuing. To bag on someone because their niche is different than yours is childish IMO. I am responding because its answers like yours be it a joke or not, that turn a lot of people away from these posts and hunting sites like this. I haven't been on MM for awhile now because of good post getting hijacked and turned into crap. Instead of learning and enjoying each others knowledge and expreience, it gets lost in the mud that is thrown around.