What does it show about a slightly (3/100ths of an inch)smaller hole, with extra energy? Your statement above assumes that the .338 WM has more energy, but it's actually a couple hundred foot-pounds less than the .300 RUM.

I can understand Beartooth's sentiment about "heavier is better" when discussing the difference between using a 180 gr. solid out of a .303 British on elephants versus using a 500 gr. out of a .460 Weatherby. But when discussing the .300 RUM versus the .338 WM, we're only talking a 10-50 grain difference in bullet weight, and I don't believe that, with a properly constructed bullet, that amount of bullet weight would be significant, especially where the slightly lighter bullet is travelingquite a bit faster and with somewhat greater energy than the slightly heavier bullet.

So, KD, are you going to use that Lapua when you go? I doubt there'll be much debate about whether THAT is enough gun...