Ok, using the same character as before:
5th level character
S – 12, D – 17 (18), C – 10, I – 10, W – 10, Ch – 10
Using 4 recoil versus AC 15 with a 2d6 weapon including Point Blank Shot.
Shot 1 (4) = .8 * 8 + .8 * 8 * 0.05 = 6.72
Shot 2 (8) = .8 * 8 + .8 * 8 * 0.05 = 6.72
Shot 3 (12) = .8...