That 23 ounce Judge really sounds more like the PD. My Judge is SS, 2.5" chambers, 4" barrel and I haven't weighted it, but I know it is a heck of a lot heavier than 23 oz. I have shot a number of 250 grain Cowboy loads and their recoil is a lot less than what those Speers generate.
A good friend of mine has a nickel plated S&W Mountain Gun (4" barrel) and I can tell you it is a lot lighter than my Judge. He runs his own reloads with a 285 grain SWC with gas check that is running just shy of 1,100 fps. He said that is the hottest load he can handle with that pistol. He said the pistol can handle more, but he can't.
Still, I would take Ranch Dog's 290 grain reloads over the Speers without even thinking about it. His reloads are within the SAMMI spec for .45LC and just looking at them in his Taurus 450 snubby, it appears they are pushing the limits of OAL, which is what you want in a Judge. He is telling us he gets 745 fps out of that 450 snubby, so you should do that, or better out of your Judge. Plus, just look at the meplat on that bullet, it hurts just looking at it.
That friend of mine is already going to cast up some 265 grain SWC-GC in .44 for me, Ranch Dog has me thinking I should get some of his 285 grain SWC-GC in .45 and load them up for my Judge too. For those of you who cast, I think that Ranch Dog has molds for that original design of his for sale.