In my last post there are the beginnings of a discussion on scale, in particular how Irregular Miniatures 25/28mm figures compare to other ranges and are they 25mm or 28mm.
The photo below shows how the figures compare. On the left is a 25mm Minifigs (chubby variety) figure, then the Irregular Miniatures offering, followed a Warlord 28mm plastic soldier, then old and later Hinchliffe figures.
Irregular figures are a bit small to match modern 28mm figures, but work well with Hinchliffe and a bit oversize for Minifigs.
I hope that this is of use.