Up to and until this test; I was only using HS-6 for all my pistol loads....I was a fan boy. I had these 2 other powders in the cabinet, and it was a rainy day..... The handloads I tested today were for a fairly-new S&W M&P .40 cal; the projectiles were 180 grain plated hollow-points from Berry's Mfg (my favorite source ). Both loads functioned perfectly. Load #1 was 4.7 grains of Tighgroup; it had less kick, (recoil) & my groups were 4" @ 10 yards. Load #2 was 5.6 grains of Universal; a much hotter load and my groups were 6" @ 10 yards. I'm going to keep the Tightgroup load "as is" , but dail-back the Universal for the M&P. We are going to shoot the Universal load out of a full-size HG next week to see how it functions, but I think 5.6 grains of Universal is too hot for a small frame HG like the M&P (which I have to use a "death-grip" to keep it under control anyway). Last week I tested 155 grain Berry's plated flat points from the same pistol, using 8.0 grains of HS-6; it also functioned perfectly, but it too needed a "death-grip" to keep it under control. I'm probably going to dail-back this load a bit too. Grandson shot paper robots, martians and clay pigeons with the 22/45 . Was a great day.