The midframe is more interesting to me. The idea of a "safe" mid-bore .4_ magnum in the smaller frame appeals. And, using a .357 donor you'd already have a fitted cylinder that just needs to be reamed. With a midframe .41, to me, you'd "really have something" then, IMO. I've already got .44 Mag Vaq's--or they are otherwise out there--and don't need something "close" to what's already available in a big, heavy frame (the .41 even heavier). Relative to this, I also have a donor .357 NV--that's supposed to be destined for a .38-40/.40 convertible. A .41 midframe has always been on the list though. Now the thought's been rekindled--Darn this thread!