When found, I believe the ABINGDON Works Co, Ltd 11.4 x 59R Turkish Peabody-Martini (aka .450 P-M) cartridges are usually loaded with a flat nose paper-patched lead bullet. The only place I am aware of these cartridges having come up for sale were in six of the Robert T Buttweiler auctions between 1986 and 1995. Five of these had the paper-patched flat nose lead bullet that was manufactured on contract for the Turks. The sixth had a paper-patched copper-tubed express bullet. I’ve included photos of one of these express bulleted examples, one of a handful I purchased 15 or so years ago. These appear to be original loads and not reloads. I assume the express bullet would identify this as a sporting load. Is anyone here aware of anything that would indicate that a ‘sporting’ load of this cartridge was marketed by ABINGDON, such as an original box or anything in print.