When it was called a .260 Remington long before it was standardized in the late 90's we use to shoot this cartridge a lot. This was before magic bullets came upon the market. Shot Sierra Game Kings.

Look at the picture above.

Questions?

If you don't want to worry about performance don't worry about it. Just shoot old school stuff and dismiss all the gimmicks. What worked form the late 1800's until the internet came around still works today. Most of this stuff is marketing and trying to sell somebody something they don't need coupled with a lack of understanding of ballistics. What worked in 1965 works today and apparently much better.

I will end with this.... if you don't think there is more killing power in the .35 Whelen than in a 6.5 Needmoor you are an idot. You may not need it to kill your 125lb spike... but C'Mon Man! Really?