As noted they are so close as to be ballistic equivalents. In your case one reason to have a .270 WIN would be that you could borrow some ammo off of one of your hunting buddies if yours got lost or gave out while at camp.
I think the .270 WIN wouldn't have been a wildcat with or without Jack O'Connor - he had no influence in its design - he "discovered" it after Winchester designed it and put it on the market. Now of course he is directly responsible for its early (and later) popularity through his writing.
Exactly! the 270Winchester was introduced by Winchester in
1925, It was 14 years later Jack O'Conner first started writing for Outdoor Life in
1939 (I don't the date of his first article about the 270.)
Regardless, they are both well established cartridges. To each his own, to argue one is superior to the other is no more than splitting hairs.
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