From what I understand, the hw100 barrel issue was a while ago and fairly limited. I too came across this when I was looking and did a bit of digging.
FWIW I've recently bought a new hw100 and its boringly good. As accurate and consistent as any more expensive steyr, fwb etc that I've owned in the past.
Don't think it matters which rifle you do research on, you'll always find someone who's had a bad experience. The hundreds that had no problems don't make the news.
Hope this helps a bit.