“interchangeable” and "Very Close" Calibers In Manual Guns

[StuP]

38/357 in a 357, 44 spc/44 mag in a 44 mag, 223 / 5.6 & 308 / 7.62 in modern guns should all be ok. Other than that, you're straying from the norms, (may be a few others), but just because a round will chamber does not make it interchangeable.

 

[rumrunner55]

Here you go, the item that holds all the answers you seek

 

[Jeddak]

I want the Medusa. One of my unicorns.

 

[TattooedGunner]