I’ve got a 261 and I don’t know if it would do it, unless it had skip chain on it or some sort of tune up to increase power. .325 @ 20” is about all it wants.The newer mtronic and AutoTune saws will pull a 20x3/8 just fine for firewooding if you know how to tune a chain well. Then again, I don't recommend those saws for firewooding typically.