I recently found a case of the old Black Hills 45 auto rim ammo, which was loaded with a 255 grain lead semi wadcutter. I don't have load data on it since it is long out of production. One reviewer stated it was approaching 45 colt power.
I just want to make sure that shooting 500 rounds through my 1955 vintage pre 25 is going to be safe. I know some of the S prefix guns were made into 44 magnums but were the 45s built to the same specs strengthwise? Should I go out and shoot my ammo, or maybe trade it off?

If it is commercial loaded you are good

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Very dangerous, but I'll pay for shipping so you can send it to me - because I'm such a nice guy.

This is a job for a professional...Better let him send it to me...You can still pay the shipping though......Ben

Max SAAMI pressure for 45 Colt is 14K PSI. Max for 45 ACP is 21K.

45 Colt throws a 250 grain bullet 900 FPS. 45 ACP throws a 230 grain bullet 960 FPS. I wouldn’t worry about hurting the N Frame with a standard 45 Colt load.

I'd have no problem with shooting it....its totally safe. But in today's political climate, I'm not doing much plinking. I'm saving what I have until I get a better grasp of what might come.

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Mike H

The company is still in business, perhaps contact someone there and ask? Surely they can look up the specs for out-of-production loads.

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Alan
SWCA LM 2023, SWHF 220

I'll hep you empty out them brass cases.

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John 3:16
WAR EAGLE!

I truly don't know how old ammo can be before it fails or becomes unsafe because I shoot old vintage ammo all the time and have never has any fail.

I Pheasant hunt every year and I just about finished using up all my paper hull 12 gauge ammo that my Dad left me. I'm keeping one box just for laughs.... That ammo has to be from the late 1950's to the early 1960's. I have at least 20 more boxes of Winchester, Remington and Peters that boast "NEW" plastic hulls (early 1960's). It all works just fine.

I have shot .45 acp ammo from the late 1940's - 1960's and had cases of Remington .38 spl. wadcutters from the early 1960's that have not had even one single failure to fire.

Believe it or not I still have Remington .22 shorts left over from my youth and even though it's over 55 years old it still works fine.

I believe that as long as ammo is stored properly in a cool dry place it will last well over 100 years. Now having said that, I will use vintage ammo for just about every purpose except for personal and home defense. I just feel better using newer ammo (under 10 or 15 years old) for that purpose.