g00b,
You'd have to do some testing.
I recall J_A_B and I were testing some tail destruction with the Hispano, using the P-38 for controlability purposes.
From 50 yards a Lancaster's tail took 17 hits to remove and a B-17G's took, IIRC, 24 hits.
As a comparison, a Mosquito's took 3, a Bf110G-2 or P-51D took 2.