Because I only come to the forum about once a week, more or less, You'd get your answers quicker by emailing me direct at LBTisAccuracy@localnet.com as I answer my emails most every evening.
Seating depth of any of my bullets is relitive to nose length and overall length, and I can't remember what OAL is, but will have to get it from the shop, which I will when you email me. If recoil isn't a problem with pulling bullets, and if the cylinder has enough length outside the case, I can probably give you more powder room than I did Axehandle, though I don't recall what I cut for him.
With any molds I make I have more flex in what I can do than any mold maker on earth, and pretty much know the limits of how far we can go in any direction without losing ground.