I heard that the stainless steel is stronger is it true?
Before I get started, I'll say that I'm speaking from what I know about rifles and rifle barrels, but I assume it would apply to handguns too.
There's several grades of steel, and even steel that is supposed to be of the same grade can vary a bit. Gun manufacturers also use different grades of steel and often from different suppliers. But to get to the main point...
In general, the grade of stainless steel used by most manufacturers has a lower Rockwell rating than the chromoly they use. Since the stainless is a bit softer, it is more prone to wear and galling. However, stainless resists heat erosion better, which is one reason it's so popular for aftermarket rifle barrels, as the throat doesn't burn out as quickly.
So, depending on how you look at it, stainless could actually be weaker. For all practical purposes though, if you stick a load into a gun that's hot enough to seriously damage it, you'd probably be up the old s#!+ creek whether the gun is stainless or not :wink: