OK. Going by what you've said, here's my revised method:
I have two Shelmet parents (denoted M1 & F1) and their IV spreads are as such (HP/Atk/Def/Sp.Atk/Sp.Def/Spd):
M1: X/X/X/X/X/31 (equipped w/ Power Anklet)
F1: X/X/X/31/X/X (Modest & equipped w/ Everstone)
I breed them until I get a male (denoted M2) and a female (denoted F2).
Their IV spreads are:
M2: X/X/X/31/X/31 (equipped w/ Power Anklet)
F2: X/X/X/31/X/31 (Modest & equipped w/ Everstone)
Breeding these two, would the resulting offspring have a good chance of inheriting both of the perfect IVs?
~The Head Honchkrow~