Check out Thunderbolt Mountain's 25 mm Arthurian range. Though somewhat taller than most 1/72 plastic sets, they are much truer to human proportions than most metal sculpts. Unfortunately the crossbowman they offer is probably over-armored (chainmail, helm and quilted gambeson) for the Crusades.

Anyway, check out a comparison pick here-

http://blog.myspace.com/index.cfm?fuseaction=blog.view&friendID=283768777&blogID=392638929

If you need crossbowmen then have a look here:

http://www.valdemarminiatures.com/information.asp?Page=114&menu=5&type=menu&print=print&web_version=1

The set will be made in plastic, weapons will be in metal as the set will come with both crossbows and swords/axes.

We expect to release the set in june/july.

Best regards
www.valdemarminiatures.com