Most Symmetrical Canister Shells?

[Arles]

I feel like some of the newer 6" and 7" canister shells I've seen videos of appear to have more frequent symmetrical breaks than some of the old school 4" and 5" cans. Are there any canister shells that you've used and feel are breaking with more symmetry than the typical canister shells?

[Birdman]

I can't answer that question but one observation I've made is they look better if you fire more than one simultaneously. If they break close enough together they sort of "fill in the blanks" for each other.