As the title states I'm wondering if the .38 round work in a .357 New Model Blackhawk safely and consistently? Thank you.
Not true.marlin39a said:38 S&W and 38 Special will work fine and completely safe.
.38 Short Colt, .38 Long Colt, .38 Special, .38 Special +P, and .357 Magnum may be safely fired in a .357 Magnum chambered firearm.
.38 S&W uses a larger diameter bullet and case and may NOT be used.
Excellent my friend thank youYep, that looks right. One oversight is that you can also fire .38 Special +P (In between .38 Special and .357 Magnum--but closer to .38 Special in pressure.) The only way you'd come across .38 Short Colt or .38 Long Colt is if you handload or find a niche cowboy load.
.357 Magnum is sort-of like having a 12 gauge chambered for 3 1/2" shells; in that a 12 guage so chambered can safely use 2 3/4" and 3" shells, as well as the 3 1/2" shells.
.38 S&W is an altogether different cartridge with different specs all around. Just stay away from it. More information than you probably wanted, but here's the bottom line
Modern Production Ammo:
.38 Short Colt--Safe
.38 Long Colt--Safe
.38 Special +P--Safe
Anything else--Not Safe
You're only likely to encounter the last three, and don't try anything not on this list cough--.38 S&W--cough.