I had a little CNI module from "extremelasers" which was sold as a "100", but I think was actually a 50mW or 80mW from CNI, which I tuned to a stable 260mW. I had it very very close to 300mW (about 295) but I couldn't get it to be 100% stable at that power, so I took it back down a bit.
This was all done without touching the diode current.