From a fellow lefty, If you see brass flying when you’re shooting you need to focus harder.
The only ones that Ive ever noticed is shooting a 12ga semi-auto. I meant more along the lines of how consistent its ejection pattern would have to be to not clip a nose, chin, cap bill, etc. The only guns I make it a point to buy LH are bolt action, everything else is because it was there or I dont worry about it at all.