Have had great success using Red Dot/Promo powder loading the .44 Magnum with an RCBS 250 grain Keith bullet shooting a Ruger Superblackhawk & a S & W Model 29. I use 7.0 grains and get 900 FPS in the M-29 and 950 in the Ruger. Very accurate and comfortable to shoot. In the past I've used Bullseye, W-231, HP-38, & Unique. When the great powder shortage hit, I starting using Promo more to stretch my powder inventory I found it worked superbly, however it is a bit dirty. I use a loading block and am careful to inspect powder levels prior to bullet seating. Was wondering if anyone else might want to share their experience using these medium loads.