I recall a article stating Nosler used the 220 Swift to test their 22 caliber bullets due to its accuracy potential. May have changed by now with new cartridges and may have been wrong even when I read it, Don't know. But my Swift is more accurate than the .22-250 I had. Maybe it was the rifles used.
That is not just a case of one, I have always gotten better accuracy with the Swift than a 22-250 in several rifles of each. just like I can always make a 222 shoot more accurate than a 223
