5536 base dam and +225% electricity means an electric proc deals 6228 and bleed deals 13563
8 pellets with +180% multishot is 22.4 pellets
electric proc chance is 33%, bleed proc chance is 50%
22.4 33% = 7.4 electric procs, 7.4 6228 = 46087
22.4 50% = 11.2 bleed procs, 11.2 13563 = 151906

so per hit it deals 56k + 46k in electric procs and 151k in bleed procs
you double-tap so that's about 500k per