38 super rounds?

Discussion in 'The Ammo & Reloading Forum' started by Radioman909, Mar 31, 2011.

  1. Radioman909

    Radioman909 New Member

    Feb 28, 2011
    Left Coast of America
    Can I fire 38 Super rounds 80grs. through my Ruger New Model blackhawk .357?
  2. jim brady

    jim brady Well-Known Member

    Sep 22, 2009
    Simla, Colorado
    The .38 Super (Automatic) is a totally different breed of cat than the .357 Magnum. Ammunition is NOT inter-changeable between the two. If you mean "Can I use 80 grain cast LEAD bullets intended for the .38 Super for reloading the .357?" the answer is 'yes'. but.... you need to find a source that will give you a safely tested powder charge.

    According to my Lyman reloading manual, cast lead bullets for the .38 Super should be .355 to .356 diameter, and those for the .357 should range between .357 to .359.

    So, just for the sake of an arguement, if you have cast bullets (unsized) for the .38 Super that wiegh 80 grains and mike out at say - .356 or larger, you could manage to load those into a .357 Magnum case. You'd have to find a source for a safe powder charge, because the lightest cast bullet in my manual calls for the same 92 grain cast bullet in .357 Magnum and .38 Super.

  3. LDBennett

    LDBennett Well-Known Member

    Dec 20, 2003
    Hesperia, CA

    It is never wise to experiment with reloading beyond what is in reloading manuals. If you can not find the 80 grain bullet used with 357 cases DON"T DO IT, FOR SAFETY'S SAKE.

    If it is commercially loaded ammo in 38 super you are trying to put in a 357 mag guns, DON'T DO IT! Only use ammo that is marked the same as the markings on the barrel of the gun.

    If 38 Super 8o grain uses .355 to .356 bullets and 357 mag uses .357 to .359 bullets then the 80 grain bullets in the 357 mag gun will not be adequately guided by the barrel and the accuracy would be terrible. It also will leave lots of lead in the barrel as the gas escapes around the bullet, melts it and leaves some of it in the bore. There is no way using 80 grain 38 Super bullets or ammunition in a 357 mag gun makes any sense at all and it may be unsafe as well.

  4. woolleyworm

    woolleyworm Well-Known Member

    Feb 23, 2009
    SW Fort Worth
    agree with the other posts, will just add that if it were a SHTF situation and I was out of 357 bullets, I would not worry too much about loading 80gn bullets into 38/357 cases; any other time, there are lots of red flags there. I love my guns and don't want to lead the snot out of them.
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