Why does your MPF ratings show 24 loft for the 6 iron 2019 Big Bertha and Callaway website shows 26 loft? I would think that difference would change your MPF rating.

https://www.callawaygolf.com/golf-clubs/iron-sets/irons-2019-big-bertha.html#product-specs

The MPF formula does not include loft. See the following Link:
http://ralphmaltby.com/method-of-determining-mpf/

24 vs 26 is probably a type.

Sorry for the bad info above, I review the info and see that the Tangent of the loft is used in detmining the VCOG.