The rest of the answers given are completely correct, however, I got tired of setting dies back and forth while loading between the .44 Mag and the .44 Special so I bought an extra set when Midway had a sale on dies and bought another set to avoid this issue.
I bought the Lee four die set and am completely satisfied with these dies, it is nice to not have to reset dies all the time. Congratulations on your new revolver the .44 Special is one of my all time favorites and I currently own three revolvers chambered in this caliber.
I find that as I have grown older the .44 Special is a great deal more pleasant to shoot on a regular basis, the .44 Mag is always a handful and fifty of those are more than enough at one setting. In the future you just might want to add an additional set of dies, look for sales or a good clean used set, they are out there.
One additional thought is that I have had very good luck with V/V N350 when I desire to load up some hotter loads for the .44 Special this powder burns very clean, measures well and develops very good performance without pressure issues.