The Ackleys have their place for sure. Take the .250-3000 for instance. Improving that cartridge basically turns it into a .25-06 on a short action with out using as much powder. Granted we also have the 25WSSM these days but that wasnt always the case and may not be in the future.

I also agree that the .22 Mag is a way better cartridge than the .17HMR.