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

  1. #1
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    What powder does Winchester use in their 95-grain .380 ACP flat point ammo?

    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.

  2. #2
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    If I had to guess they use Win231.

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    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.

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    Refer to a reloading manual.

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    We will probably never know.

    Don't ammo manufactures use non canister grade powder?
    The price of liberty is, always has been, and always will be blood: The person who is not willing to die for his liberty has already lost it to the first scoundrel who is willing to risk dying to violate that person's liberty! Are you free?
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    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.

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    I've asked several manufacturers which propellant they use, and they almost universally guard the information as proprietary.

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    Ditto the proprietary powder.

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

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

  9. #9
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    Quote Originally Posted by jsbhike View Post
    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......

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