Yup- it does have to be a 220 swift. As for your comments, they are great cartridges. I like everyone else has a .223. I shoot it quite a bit,burned a little over 100 rounds yesterday 12-31-07. I'm happy with it, averaging 5/8 groups all day long. As for the 22-250. I currently load rounds with my 243 to match that. Shooting a tad better than the 223.
The Cz 527. Love them. I have one in 22 hornet. Sweet shooter! On paper and critters. Was amazed what it was able to do with the 35 V-max on a rabbit.
So as for the 220 Swift. Yup! With all of the calibers that I have. Everyone else has them as well. Or at least knows someone with them. have yet to find anyone that has the 220 swift, many that I am finding have never heard of it.
But as for the posting. They are great rounds, just needing to be a little different on this next rifle