Starrett makes a few different models with different punching strengths if you need a lighter punch for softer material. The punch strength on the individual models are also adjustable.
Eclipse in the UK manufactures two different automatic center punches, one with a heavy punch strength, the other with a light punch strength, both models also have a variable punch pressure.
Racodon of France manufacturers about ten different automatic punch models. Some have different body diameters, and I presume punch strengths but the catolog I have doesn't have a whole lot of information. I'm not sure where you would find the Racodon punches, but they may manufacture a couple punch models that Facom sells. The Facom models seem to be regarded well.