I've also have great results from the Remington Accutip boat tail on elk, though not at long range.
Wow the accutip is none other than a Hornady SST. In my experience it is Hornady's answer to the Nosler Ballistic Tip, results were very similar to that of the NBT I have used on many deer sized game. I would think at closer range it not be as goodon larger game than longer but then again I haven't nor doI plan on attempting to verify this notion. My opinion is while it and others may work a bullet designed for controlled expansion is the better choice for the larger deer species. Never lost an elk or moose and don't plan on it, I like the TSX now but previously the CT failsafe and NP were my preference. I have used the accubond to harvest both animals but not sure I could trust it on a heavy raking shot vs the others. Didthe jobon a rib in and out but so do theTSX, NP, etc. I know these will slug through the shoulder to get the vitals if need be.