The .38 Special and the .38 Smith and Wesson are not interchangeable. .38 Smith and Wesson is larger in diameter than the .38 Special.
The .38 Caliber Handloader Magazine
38 Super vs .38 Special: A Caliber Comparison
V Is For Victory: The Smith & Wesson Victory Model Revolver
The .38 Smith & Wesson: History And Performance
Can I make a 38-55 casing from a 38 special casing to use in a 38 S&W? - Quora
Why is 38 special ammo bigger than 38 ammo? - Quora
357 Magnum vs. .38 Special
TFB Round Table: Anything Special About 38 Smith & Wesson?The Firearm Blog
357 Magnum vs. .38 Special
38 S&W - Wikipedia
Caliber Comparison: 9mm vs. .38 Special - The Truth About Guns
Are .38 and .357 interchangeable? - Quora
38 Special vs 9mm - Difference and Comparison
Bullets: Sizes, Calibers, and Types [Guide + Videos] - Pew Pew Tactical
38 S&W (The Other .38)