I see in my Hornady load data there are several 150 grain .300 Weatherby loads that show a high end speed of 3500 fps. I wonder if anyone here has ever tried any of these or if you have achieved anything over 3400 fps for such a loading. I have used a 180 grain Nosler Partition with a max load of H1000 for years because it's extremely accurate in my rifle. I have had pass throughs on elk all but one time, and I can't complain about effectiveness. So naturally I wonder about other loads and if I can improve on this thing that works so well. I'm wondering about a lot more speed and a little less weight, and if I can get a good group going I might try a couple of hunts. I think my current loads clock at about 3050 or so judging by trajectory and published data. Another 4-500 fps would be interesting to me. I have always been a "heavy-for-caliber / cartridge kind of thinker, but I wonder if I'm not wasting a bit of energy on a thin-skinned animal like an elk? Any opinions on this experiment?