I have several Ruger Supers, the 7½", the 5½" & a couple 10", & the S&W 629, 8⅜". My Son also has the 629 in the 6".
My hunting load for the 44 magnum Rugers has always been 28 Gr. of WW 296, behind a Hornady 200 Gr. XTP, with a WW large pistol primer. I've used this load ror years in the Rugers, but will no longer use it in the S&W's. They fall from the Ruger cylinders, & were almost impossible to remove from the S&W cylinders. They had to be pounded out. That shows me first hand, something about the strength of the gun, that no one else has to tell me. A friend has an older "Astra" .44 that looks almost exactly like the 629, & it handles them as well as the Rugers do (tilt it up & a light touch on the ejector kicks em all out) easily. I've used them all down thru the last 60 years, & I know where the strength shows in regular use. I hate to dis-agree with whoever did those tests, but it is a joke. I think that is why "all" the reloading manuals agree with me, & list hotter loads separately for use in "T.C." & "Ruger" only!!