[parsifal]

I was referring to mechanical reliability. If a 45 works well, I do not see why the same design and materials cannot be reused for a long time. If the 9mm slug doesn't work well, I would think that is a separate problem, independent of the make of the weapon. parsy.

[Shooter 2.5]

I'm not sure if this works in all cases but I'm going to pass on this bit of advice that was given to me years ago.
If you buy a gun, buy it in the original caliber that the gun was designed.
I don't know if this will help you in any buying decisions but it has helped me once or twice.