Buffalo Link

EV

Bet size

1234 buffalo heads collected

85% base game return

Includes everything except the MHB feature. In the short term, a 50% (or lower) return is possible.

20 units average MHB feature payout

20 units is a conservative estimate. Adjust higher if you want to be more aggressive.

20 buffalo heads collected per spin

My data shows you collect an average of 1.7 buffalo heads per spin. Adjust at your own discretion.

The average MHB feature payout is likely between 20 to 30 units, depending on how heavily you want to factor in outliers like hitting the major and grand.
The EV (expected value) is what you will make on average over many sessions. In the short term, expect large swings.
The potential loss assumes the meter goes all the way to 1800 (rather than the midpoint), the MHB feature pays $0 (which happens frequently), and the bleed rate along the way is 85%.
If you know the RTP of the machine/bet level you are playing, then you can subtract the MHB feature contribution to RTP percentage from the RTP to dial in the exact base game return.
See a complete breakdown of the math inside the Machine Pro Club community here.