Linstrum
12-08-2011, 03:14 AM
Last year I got a pound of Winchester Autocomp pistol powder, but I haven't tried it in my 9mm pistols yet. I did use it in my Citadel 1911A1 .45 ACP and it worked fine without any complaints - I was shooting 18-inch groups at 100 yard targets using it, which is no big deal with a pistol that groups small. Just hold high and walk your shots to the target to get the range. Anyway, the Winchester Autocomp loading data for the 9mm Parabellum shows a rather narrow 1/2 grain usable powder range (4.8 to 5.3 grains) with 130 grain projectiles. The Lee 9mm 124 grain truncated cone weighs in at 130 grains using the particular wheel weight alloy I use. Because the 1/2 grain range is a pretty small spread compared to Blue Dot, which I normally use, I would like to know if anyone else has tried the combination of Winchester Autocomp powder with the Lee 9mm 124 grain truncone so I can get an idea of which end of the powder load spread this particular combination favors. One thing about Lee's 9mm 124 grain truncone is that it sits a little deeper in the cartridge than other cast projectiles do, so pressures tend to be on the high side with this projectile because of the reduced case volume.
The pistol I want to try the Autocomp powder in is a Browning High-Power that is from the Israeli police. My pistol is marked "FABRIQUE NATIONALE HERSTAL BELGIQUE Browning's Patent Depose", so it is the real thing. From what I read it was made in the 1970s or 1980s. It does quite nicely with factory copper jacketed ammo, around 6" at 25 yards. I want to see if I can get group size down a little more. I also have a 9mm Cz-85B pistol that on the outside is almost identical and performs the same.
I like the truncone style boolits in my 9mm and .45 autoloader pistols because they feed well and have pretty good accuracy. In the 1910s the German military did experiments using truncones and found they had good performance and "stopping power". Because of war atrocities during WW1, the Germans discontinued using truncone pistol ammunition to avoid having German POWs executed instead of simply being interned in POW camps.
rl 1029
The pistol I want to try the Autocomp powder in is a Browning High-Power that is from the Israeli police. My pistol is marked "FABRIQUE NATIONALE HERSTAL BELGIQUE Browning's Patent Depose", so it is the real thing. From what I read it was made in the 1970s or 1980s. It does quite nicely with factory copper jacketed ammo, around 6" at 25 yards. I want to see if I can get group size down a little more. I also have a 9mm Cz-85B pistol that on the outside is almost identical and performs the same.
I like the truncone style boolits in my 9mm and .45 autoloader pistols because they feed well and have pretty good accuracy. In the 1910s the German military did experiments using truncones and found they had good performance and "stopping power". Because of war atrocities during WW1, the Germans discontinued using truncone pistol ammunition to avoid having German POWs executed instead of simply being interned in POW camps.
rl 1029