Trail Boss is what I use in my modern production N0.3 S&W's in 44 Russian. Hodgdon's web sight lists 3 bullets for 44 Russian 185, 200, & 220. If you look at the loading tables you will see that you can load any of them with a single scoop of Trail Boss in the 3.3 to 3.5 grain area. So when you can, pick up some Trail Boss, some Large Pistol primers (I use Winchester), and Lead RNFP (Round Nose Flat Point) bullets. Most modern 44 loading dies will size and crimp from the short 44 Russian to the long 44 Mag, but some older dies won't crimp that short. (I have one old Lyman tong tool that says "44 S&W" that will do Russian and Special but not Mag!) These Trail Boss loads are in the 7000 to 10000 CUP pressure range, full power Black Powder will be around the 8000 CUPs area. Two rules, 1) Never compress Trail Boss & 2) always compress Black Powder! Not following these rules can result in massive pressure spikes that could hurt your gun or even you!
15 years ago I bought 500 of the "Top Brass" brand, The quality was so poor that in 3 shootings all 500 were destroyed (the few that were not, I threw away!) I have been using Starline since then with fine results. I have a few dozen of the Fiocchi, and much prefer the Starline!
If you were to use Black Powder of one of the substitutes, the case needs to be full, and that would be in the 20 grain area by volume, depending on the bullet. The Very first factory loads were 246 grain hollow base and later 200 grain solid base. The 246 grain bullet, loaded in the long obsolete balloon head cases, used 20 grains of FFFg Black Powder. With that long skirted Hollow base bullet, the reputation was very well deserved. With the tiny sights of my Number 3 S&W's My dad (at age 74) could shoot groups of 2" or smaller at 25 yards (My eyes were never as good as his!)
Last advise: Print this thread out and put it with your loading books, otherwise you will never find it when you need it!
Ivan