RE: .22-250 vs. .220 Swift
I have shot at groundhogs at ranges in excess of 700 yards with my 22-250. If I was a better shot I would of killed them. Its tough to compensate for a gun sighted in at 300 yards if youre not used to it.
The swift doesn't offer enough advantages at theaverage shooters ranges. I use a 55gr. NBT pushed by 39 gr. of H380, a WLP, and Nosler cases. I get about 3500 fps or so.(can't find my chrono sheets)
However, if I found one I liked I would buy a Swift in a heartbeat. Same goes for the .204. I don't need them, probably wouldn't use them much, but I have a empty spot for either or both in my safe. The 22-250 and the swift are fine guns. The 22-250 gets the nod if not reloading.
Good luck and good shooting.