I havent shot the new bullet but many years ago a Friend and I got top accuracy with Unique powder, Winchester primers with mixed brand brass cases. We mostly shot 115 grain Sierra JHP but the few 124 grain Sierra JHP were just as accurate in a Glock 17, Sig P226 and S&W 5904.
The data from Alliant I found recommended 5.2 - 5.8 grains of Unique with a 124 grain Gold Dot HP. We used to load hotter than that with Unique in 9 MM but were listed safe at that time. Today I mostly use TiteGroup or Accurate # 2 for my pistol cartridges, 380, 9 mm, 40, 45, 38 Special. Ive gotten good accuracy with both powders but I only load 115 grain bullets in 9 mm.
My Friend usually gets the Sierra updates and next time I see him Ill check his most current data.
The data from Alliant I found recommended 5.2 - 5.8 grains of Unique with a 124 grain Gold Dot HP. We used to load hotter than that with Unique in 9 MM but were listed safe at that time. Today I mostly use TiteGroup or Accurate # 2 for my pistol cartridges, 380, 9 mm, 40, 45, 38 Special. Ive gotten good accuracy with both powders but I only load 115 grain bullets in 9 mm.
My Friend usually gets the Sierra updates and next time I see him Ill check his most current data.