I'll concede I may have given some marginal info.I got the 30,000 psi limit from the Ross Seifred article.And,it is fair to say Ross pushed the .45 Colt Ruger loads pretty far.I'll accept Ross has a bit of hotrodder spirit.It is also true his pressure figure was speculative.
However,the loads I compared in a Handloader magazine showed H-110 charge weights identical to Ross's loads,and Handloader claimed 25,000 psi for the load.I will assume Handloader has better resources .
In any case,I cannot measure the pressure.
Both Ross and Handloader came up with the same loads.
Without recomending anything to anybody,when I get around to developing the load,I have 500 .431 gr Laser casts SWC's,I think they are 240 gr.I am planning to order a 280 gr LBT type mold.I am thinking my max will be around 18 to 19 gr H-110,depending on bullet,as described in the Seifred and Handloader articles.
BTW,fitting the Brownells reduced power trigger spring and setting the hammer and sear surfaces flush with the top of the mill vise jaws and just a few strokes of shine with a hard arkansas stone,maintaining square and the same angles,makes for a real nice trigger.Some travel,as it is still full sear engagement.
On the frame arguement,I do not claim to be an expert,but seems to me the window for the cylinder is a touch longer on the Super Blackhawk,and maybe the 30 Carbine version.I won't argue it,though,I do not claim to know for sure.
It is true that the .44 Lipsey spl is on a mid size .357 flat top frame.
I have a 1970's vintage New Model Super Blackhawk 44 mag I cut to 5"
I'll keep it as a match for the Browning 92 I rebuilt as an oct bbl ,crescent butt rifle.
Short of Alaska,I think the stout .44 spl loads will handle anything I need to do.