In addition to my first post I want to add this. Even if you did find a way to shoot .38 S&W ammo in a .38 Special it would be a waste of money. .38 S&W ammo costs way more than .38 Special ammo so even though you tell us you have a lot of .38 S&W ammo I would save it all for revolvers chambered for it. It's harder to find and when you do it can cost you as much as twice the price of .38 Special ammo and that's for plinking ammo, not SD ammo. 146gr LRN .38 S&W ammo in 50 round boxes from both Remington and Winchester are usually well over $30 a box. Even with the still inflated ammo prices you can find 50 rounds of .38 Special for under $15. You really don't want to buy factory .38 S&W ammo if you don't need to...

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SWCA #3437