Get this question a lot and there is no answer to it!   Actually there is an answer 'I don't know because I don't know you!' It's not about the saw it's more about you the person using the saw. Personally I think it is a question you should be able to answer yourself and if you can't - stick to what the manufacture's guidelines say.   Below from milling faqs.     What is the max size bar I can put on my bar? What will my chainsaw bar pull? It is NOT about you