Shooting .32 ACP in .32 S&W long revolvers

Hey, yesterday I found some ammo in my pockets at school, there was .32 ACP, 9x19, and a few .44 specials. I showed them to my friends and one of them asked me If I could get him some .32 acp ammo for a revolver his brother has, in .32 S&W long. I told him that he should NEVER use a cartidge other than what the gun was designed for. Now my question is, is it safe to fire .32 ACP in .32 S&W long? I have plenty of .32 long ammo so I don't need to take the risk, so it's just a question.

I really don't know why this guy wants .32 ACP ammo if .32 long is much more common. In fact I've seen .32 ACP very few times in my town.

rcmodel said:

Max pressure of the .23 S&W Long is 15,000 PSI.

Max pressure of the .32 ACP is 20,500 PSI.

Will it work?
Yes.

Is it a good idea in old guns?
NO.

rc

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Yeah, I told him he should NEVER fire cartidges other than .32 S&W long. It might work and be safe but if he can just buy the right cartidge why shoot .32 ACP?

stressed said:

Ammo in your pockets at school? Had this been in the US Feinstein would have sent SWAT in.

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I'm sure about that. But this is in Uruguay. Schools are still gun-free but they have no problems with ammo. (At least mine)