Originally Posted by pilgrim6a
Please note. These cases are .38 spl. dia. They are undersized in .38 S&W. If you shoot them in your old Safety Dbl. Action or Victory Model, the cases will split.
Please don't parrot what you have "Heard somewhere" and have no experience with. The nominal difference between .38 Spl. and .38 S&W is .008", about 4 pages in a typical "slick" magazine. The smaller case will have a slightly higher probability of splitting when fired than a proper sized case, but to say it will split is assuming what simply isn't true.
One of the most extreme cases I can cite is fire-forming 7mm Remington Magnum cases to .458 Winchester Magnum, a difference of ca. .174", nearly 22 times the difference between the .38 cases, with less than 5% failures due to splitting. If anything was going to split this would seem to be a nearly 100% certainty, wouldn't it?