I am surprised you would state that .44 Special can be loaded up to .44 magnum levels, as that sounds dangerous and foolish to me.
Have you ever heard of Elmer Keith? Taffin? Skeeter? Brian Pearce? Seyfried? Read up
. The .44 Special Keith Load isn't a 'magnum' load at all as it is only moving a 240g bullet at ~1200fps. That's wimpy compared to 1400+fps of a 'real' magnum load of a .44Mag. And yes, the .44 Special can be loaded up to 1200fps in the RIGHT revolvers (but NOT in a CA Bulldog for example). My goto load in .44 Special is the Skeeter Load (around 1000fps) in my Ruger .44Special flattop revolvers which for me is a good hard hitting accurate load. I have shoot a few Keith loads in mine but not for general use. Know your revolvers! Simple as that. If I want a 'Magnum' I'll grab my .44Mag... That is what it was designed for
.... but, on the other hand, you don't have to be stuck at 700-800fps with the .44Spec either.
A few Keith/heavy Loads in the .44Spec references
Heavy Loads in the .44Special
Ross Seyfried on the .44Spec flattops
Taffin on the .44 Spec
Brian Pearce .44Spec PDF
A a treasure trove of .44 Special articles : Other .44Special Articles