This post ought to upset a few whiners...
Don fischer Told Doyle that the 6.5x308W is not another name for the .260...
Sorry Don but YOU ARE WRONG...
The "common name" for the .260 Rem is the 6.5x308 but it is ALSO known as the 6.5x308 A-Square...
The .263 Express is basically the same BUT made by necking UP the .243 Win (that is where the "3" comes from in the name)...
About 1955 or 1956, right after the .308 Win came out "Ken Waters" took the recently introduced .243 Winchester, necked it down to use a 6.5 mm bullet and called it the 263 Express.
The sole difference between Ken's version of this 6.5mm and others was the use of .243 Win cases which he found easier to NECK-UP than necking down the .308 Win...
"In the 1970s, we discovered the 6.5-06..."
Kind of late to the party guy (57+ years). The first version of the 6.5-06 was introduced in 1913 well before Winchester introduced its .270 Win...
"The 6.5 Creedmoor is a .308 case, very slightly shortened, and with the shoulder set back..."
This is WRONG ALSO!!!
The 6.5 Creedmoor is NOT a shortened .308 with shoulder set back and different shoulder angle.
It is IN FACT a necked down .30 TC with no other changes!!!
Since the .30 TC was developed from the .250 Savage, it (the .250 Savage) AND the .22-250 can be used for making 6.5mm Creedmore cases with additional steps...
I purchased my .260 several years before the Creedmore came out. Others can say all they want but after all the research I have done, I would STILL choose the .260 over the 6.5 Creedmoor. Does NOT matter what action type. Although I currently just have a bolt action now, I am planning on having an "AR-10 TYPE" rifle built and it will be in .260 Rem...
T.