NICE, NICE bulls! I shot a few elk with an 06 back in the day. Some dropped fast, some ran a little while with mortal wounds. Have no doubt it will do fine as will the speedy .257Wby. I have moved up in caliber over the years, however this doesn't mean it's totally necessary or right for every one. I just like the bigger holes now and it gives me a warm and fuzzy. The comfort and confidence you have with your rifle is the major thing (provided it's sufficient for the job at hand). I don't feel the 06 a 400yd elk rifle, rather my opinion on this is its .340,.338-378 territory. As far as being a perfect round for the job on elk? I myself think it's the .378Wby. And of course these are base all on well places shots as usual. These are just my humble opinions (and only that except for the well place bullet statement which is a given).
