Bert223, If you want near true magnum performance with superb accuracy, there are 2 powders that are a little slower than #5. Good news, they are from the same company, since Western Powder Co. acquired Accurate Powders. #7, not only has a reputation for this, it has an established track record with big bore revolver shooters questing for accuracy with powders faster than #9, H-110 or W296. Both powders are ball type and will meter exceptionally. The other is Ramshot True Blue and it will yield unbelievable consistency even up through the .454 Casull. #7 is slighlty denser than True Blue but at 985 vs 935 grams per liter, there are trade-offs for the minor difference. #7 is denser but True Blue will give better case fill and yield very low single digit standard deviations. Either will still give you factory level velocity if you need it. For a field load in .44 Magnum for game, H-110 may be the king, followed closely by W296 and then AA#9, but for Magnum level target loads required in Silhouette, you can lessen muzzle flash by going to AA#7 or Ramshot True Blue, it is also a little better economically from a standpoint of high volume reloading. I load Magnum defense rounds this way to get rid of the excess muzzle flash and find them more efficient ballistically in barrels of 3-4". Sounds to me like this was the approach you had in mind with AA#5. You will like #7 even better. True Blue may be the best undiscovered powder we have seen in years. If there are any doubts to my claim, Call the Ballisticians at Ramshot, they are more than happy to take your call and that I know firsthand. I've done it, even spent about 30 minutes on the phone with their President who was as eager to talk about reloading as I was about asking questions when Ramshot was relatively a new brand. They RAVE about True Blue and competition shooters are now raving too. You can reach them at 800-497-1007. E-Mail at
www.ramshot.com Their powder is from Belgium and in my oppinion may end up as a cost effective alternative to the excellent Vihta Vuori powders. In fact, VV does not have a powder that would rival True Blue although 3N37, 3N38 and N-350 woukld be similar for the same purpose.
Hope it works out! I can see a DW .41 Magnum in my future and I have a heavyweight jacketed project in mind for it and the Ruger Redhawk using Hornady's .411 300 gr. bullet designed for the .405 Winchester and it will most likely sit on True Blue.