I don't recall ever seeing an owners manual for handgus that said use reloads all you want. The manufacturers are all about libility coming in and bitting them in the rear.
Good powder and other components are vital, and being very careful to do things corretly is the key. I load and stay within the upper/lower powder range and have never
had any problems. Care and caution is ALL important.
As has been said, this can become half the fun of shooting, but don't use your reloads for your EDC use. It's a lawyer thing.........