AA#5 in .40 S&W

[brianidaho]

I've just started reloading for the .40 (as of yesterday, newbe here). In searching the archives here I just came across the following links concerning Accurate arms #5 in this caliber:

http://communities.prodigy.net/sportsrec/gz-glock-kb.html#kB!

http://communities.prodigy.net/sportsrec/gz-kb-notes.html#A1

I just bought a pound of this powder, and it seems to be working fine for me-I'm wondering what others have encountered. Should I dispose of this, or at least buy another powder next time?

Thanks in advance.

Brian

 

[Cheapo]

Don't dispose of it. Just load light, and use bullets less than 170 grains. I strongly suggest you shoot your loads over a Chrono to confirm their light performance level.

 

[brianidaho]

Thanks Cheapo. Now I just need to convince the wife that I need a chrono. I'm running 8.1 grains behind 150 grain Nozler HP's.

Bri

 

[Bullitt]

brianidaho


I've been loading 155 gr ld swc for about six months now. The only problems I have experienced are a malfunction every 50-75 rounds, probably a light load caused by the powder charger and the AA#5 powder smokes like a muzzle loader. I am using 6.5 grains of power. This load data is straight out of the Lee loading manual.

The kB seem to be associated with Glock because of the unsupported chamber and 180 gr bullets. I tend to think its more the 180 gr bullet than the gun, simply because the original round in 10mm called for 180 or 200 gr bullet, so then Smith & Wesson cuts it in half, but doesn't change the bullet weight, seems strange. Anyway its too much pressure for the short case. I do suggest that you use lighter grain bullets and buy guns or barrels with fully supported chambers. For what its worth, I recently read that the FBI tested 40's and decided that 165 gr bullets are the best all around bulllet weight for pressure, accuracy, recoil, velocity, energy etc.