Sevens, I didn't say Ruger should not have made that gun, it made perfect sense at the time it was conceived. I said that when it was ready for the market that time was going and today I think the gun is a relic of the past. I don't own one, but have fired several and concur with those who find the noise and blast to be excessive. In practical terms, I think .357 is much better.
As to the Kimball, the gun was made in .30 Carbine and .22 Hornet. I have never seen one of the Hornet guns and saw the .30's only at the NRA meeting when the inventor was pushing it. The fatal flaw was that it was blowback, only slightly retarded by the cutting of circular grooves in the chamber. The design was High Standard, but the gun is much bigger than the H-S .22's it resembles in pictures. In any case, the part of the frame that stops the slide simply was not up to the .30 Carbine and they came apart.
Jim