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View Full Version : What powder does Winchester use in their 95-grain .380 ACP flat point ammo?


Whytep38
12-22-20, 17:06
There are probably several powders that could work better for .380 reloading, but I'm used to the Winchester stuff (USA380VP) and like it, so I'm trying to stay close to that.
Coal Dragger
12-22-20, 17:11
If I had to guess they use Win231.
Whytep38
12-22-20, 17:16
That was my first thought. Then I heard "probably Win244." That got me wondering whether it's one of those two or something else entirely.
Coal Dragger
12-22-20, 17:54
Refer to a reloading manual.
223to45
12-22-20, 18:34
We will probably never know.

Don't ammo manufactures use non canister grade powder?
Uni-Vibe
12-22-20, 23:44
Yes. Ammo manufacturers use proprietary powders.

There are those who believe that reloading powders are the dregs that didn't pass ammo makers' specs. The reality is the opposite. Ammo makers have labs that can test each lot. If a lot is a bit out of spec, they can adjust it.

Reloaders don't have that luxury, so we have to depend on powder makers to give us their best, most consistent product. This is canister grade powder. We have to know that the density, burn rate, pressure curve, etc. of every can of AA#5 is the same as every other's.
ammodotcom
12-22-20, 23:45
I've asked several manufacturers which propellant they use, and they almost universally guard the information as proprietary.
jsbhike
12-23-20, 07:04
Ditto the proprietary powder.

4 powders listed for the 95gr/.380 with 244 giving the highest velocity.

https://www.hodgdonreloading.com/data/pistol
BobinNC
12-26-20, 11:57
Ditto the proprietary powder.

4 powders listed for the 95gr/.380 with 244 giving the highest velocity.

https://www.hodgdonreloading.com/data/pistol

Yes, but Winchester AutoComp gives high velocity at the lowest pressures with both 90 and 95 grain bullets......