My preferred method, used by my father and granddad. No wound, no infection, no tetanus, no maggots, calves recover in about 4 seconds. Clamp each cord individually, take your time, I count to ten before releasing each side. I've had 2 stags I know of in 40 some years, makes a success rate somewhere around 99.9%.
I swear by burdizzo brand clamps. Grandpa bought some other brand once as a second tool, had yellow handles, it would cut a twine string but missed a number of times. Burdizzo clamps will not cut a twine.
Had a calf unload on me one time, just as I closed the clamps. I don't know how, but somehow kicked my cheekbone and rearranged my face. When I looked straight ahead, my left eye pointed down and to the right. Wife wanted to call an ambulance, then compromised, wanted to take me to the hospital. What are they going to do I asked, put a cast on my head? Took 10 or 12 days, every day it moved a little bit back towards normal. Wife always tailed for me. We had bought a new chute. Old homemade chute had horizontal bars she could use for leverage. New chute had vertical bars. I never gave it a thought, until then.