Roper
Other that mentioning that the swift coming out in 1935 it doesnt appear to be in your arsenal.
Was the Swift's real claim to fame the light (38gr?) bullet?
Is it no better than the .22-250 when loaded with 55gr bullets?
And Finally
Did You, Joe, Onecoyote, Kyote or others ever own the Carmichael/Harris AKA .22 CHeeta? I never did hear much feed back on that one.[/quote]
I didn't want to muddy up the waters but since you asked I shoot the 220 Swift,22BR,6BRshortentalldog,22Walldog,6BR,6mmAI,6x284 and 6.5x264 plus others.
On the average when I do an Ackley round the gain is between 150/200fps.
I got a bunch of the REM BR cases was going to build the Cheeta but heard some strange things about using the small primer pocket for the Cheeta. The 220 Swift is faster than a 22-250, alot still think the 220Swift is a barrel burner and the Swift was known to vaporize bullets you would see a white smoke trail about 50yds out. Today you have better barrels and bullets. If you look at the 22cal bullets now see a 80/90 gr may even see a 100gr bullet before long, cases like the 243,257 etc would be a good combination. When the 224 Clark came out was way ahead of it's time Clark had to make his own bullets back then.
Well good luck and hope I answered all your question if not be glad to answer any more if I can.