HW/Weihrauch MK1 HW77 Front Sight Assembly Question

It's stronger than my 26mm 97 yet the 77 has less recoil movement seen in the scope.
Tom Gaylord has said that people think that HW77 and HW97 have the same output, but in reality the 77 puts out up to a foot pound more KE. He then illustrates how the 77 was designed to be a magnum that got dialed down to make it more manageable, while the 97 was designed as a 12 fpe gun that was then dialed up. Logically, that shouldn't make a difference per se, but Gaylord didn't offer a meatier explanation.

I have wanted an early HW77 in .20 or (gasp) .22 cal for a long while, but don't know if that ever becomes a reality.