Rule of thumb.Here is the deal. I suspect most of you that use a saw for a living don't poke the nose in to anything just as instinctively as you breath. I sold fire wood for years before I ever heard of a chain brake.
True story. Korean man( not that it matters) bought the store at the top of the hill. He was cleaning up a Bradford Pear that had blown down. He had on shorts and flip flops. He had a Husky 55 , 455, whatever.
And, after he cut a limb he stood there with the throttle wide open looking for his next cut. WIDE OPEN , seriously. Craziest thing I think I ever saw, with a saw.
So, my point. Keep a spinning chain nose out of anything just as naturally as you breath.
No matter the length don't dip your tip where your tip don't belong ya dipstick