Double D, thanks for the update on the proper way it is to be spelled. I did put a question mark at the end because I was unsure. If it hadn't been for a video on this web site I would of not known what they were called at all. All I knew it was an angled piece of wood under the breech for purposes of elevation.Double D, I will PM you with the information you requested on carriage sizes. If you are familiar with Brooks Cannons you will know the size of the Carriages. And Doc, yes The carriages I have do have wheels on them. As a matter of fact I sent one carriage back to Irishman (Mike) to have Brass wheels put on a smaller 50cal. carriage. It should look very nice when he has completed it.