Well If I could have reached those speeds or near them in my 20" .358 I'd likely still have it. I used the load data of the time. Seems like a useful increase. People say 150ft/sec doesn't mean much but in a situation of marginal expansion I think it does.
In any case if I had a .356 I'd certainly use it for Elk but I'd do some expansion testing and pick the best bullet, and figure out my range limitation. The 220 Speer might be it. According to the tests at Marlin site the 220 Speer when started at 2200 does expand at 200 yards and does hold together at zero yards. Another way of looking at this is that you don't need a bunch of bullets that work you only need one. Another candidate might be the 200 Rem CL in roundpoint form.
