That is a very interesting and informative opinion. I do not have the metallurgy knowledge to make a statement one way or the other but have observed great barrels made from both stainless and carbon. My most accurate rifles have been equipped both ways. A Sako TRG22 currently in my vault produces 5 shot 100 metre 1 hole slightly ragged groups as set up from the factory with its carbon barrel. I have had a .308 Sako stainless varmint rifle off the shelf that produced similarly tight groups albeit maybe a slightly more ragged hole. Not to ignore the venerable Mr Potato Head AR15, mine equipped with a stainless heavy Lllja barrel with a precisely reamed match chamber (courtesy of the wonderful folk at Alberta Tactical Rifle) is also a mind blowing performer with a large ragged 1 hole 10 shot group at 100 metres.

I like stainless barrels simply because they are much less prone to rust. If I could have a double rifle made of stainless and if I could get Heym to perform such sacrilege for a price point similar to a carbon double, I would love one in stainless in .303 British!!!