drail I agree with your point about numnuts shooting Keith loads through something like a Charter bulldog. But I disagree with not being able to build one out of a SP.
I have one of the mid framed Taurus 44 special’s (445) and it’s not as big as a Ruger and it has a small forcing cone. For normal NON Ruger loads the SP frame would work fine.
Also the 696 frame which was built on the L, I was under the impression that it was larger than a K (19) but still smaller than a Ruger.
Then again to protect themselves at Ruger, their lawyers could put a 12 line disclaimer on the OTHER side of the barrel.