So to fill in the time I finished up the 30-pounder Parrott gun. (Named for the inventor--Parrott--two T's. Not a gun to shoot tropical birds, with or from! As in Parrots--one T.)
This gun is based on historical photographs and is scaled to match the Perry 24Lbr on a heavy carriage.
I've also started on some work for three "metal" fortress carriages. I'm thinking of a position similar to the two-gun emplacement at Fort Moultrie (Google is your friend!). These are based on a variety of similar guns still extant at various east coast Civil War forts. They are scaled for the "Less so HBG". And now as I look at the carriages in "the white" I may leave one empty to suggest a use for the HBG and the sling cart. I will either have to mould and cast some additional gun tubes or if I decide I only need one more, may look at scratch building a second barrel. (Maybe a really big Parrott?)