Tom: please see this recent thread
http://www.doublegunshop.com/forums/ubbt...e=0&fpart=1and album
http://www.picturetrail.com/gallery/view?p=999&gid=17474742Krupp steel was not offered on the A.J. Aubrey/Meriden guns so you clearly have one of the high grade Meriden Gun Co. guns.
Could you post ultra close-up pics of the lockplates and receiver/watertable? or e-mail them to me by jpg attachment at revdoc2@cox.net and I'll post them and thanks!
And here's an easy way to measure your chambers
http://www.lcsmith.org/faq/chamlgth.html