@bigngreen
The record held by the 7x57mm Mauser is that by the end of the 1920's it had killed more African elephants than the .270 WSM ever will for an eternity. It also allowed WDM Bell to kill around 1000 elephants without getting charged once, and he much preferred it over his .318 Westley-Richards. He used all the common elephant guns of the day and chose what worked the best in the real world at that time. That is in the real world on real game instead of reading ad copywrite and not just a lot of armchair and target shooting "expert's" opinion. It was so devastating to the US military decades earlier that it caused the creation of the .30-06 Springfield, which is so much like the 7mm Mauser that in today's world the US government would have to pay royalties to Mauser for such a flagrant plagiarism of their design. If I wanted a perceived improvement over the 7mm Mauser I would go there instead of a 7mm WSM.
I use ear plugs AND my Pro Ears muffs when a .300 RUM shows up, and I make my dog get in the truck with closed windows. Still too loud. Until one single person shows up with an ultramagnum that can print better groups at 200 yards than my 7mm Mauser, I'm sticking with what actually works in the field. Also, with a BC of .625, my 162-grain bullet probably packs as much or more punch at 500 yards and beyond. The .270 caliber is inferior in BC to the 7mm caliber. Your .270 WSM probably has NO hunting bullets available that can match a BC of .625. Speed fades, but BC is forever. Besides the retained speed of my bullet, your .270 WSM cannot shoot a 162-grain bullet and has a lower SD for less penetration. Kill 1000 African elephants with a .270 WSM without getting charged even once and get back with me. You will be at a parity level, and we will talk about which is best after that. You have modern optics to help you, which WDM Bell did not, so you will be cheating if you use them. You would also have to use obsolete powders and nothing but FMJ bullets to be at a parity level after killing 1000 African elephants without getting charged even once. Also, leave the modern bug sprays behind and solve most of your physical woes with malt scotch whisky, then you will approach equality to the old stuff with your new and improved stuff.