Thompson Center Barrel

This is for the pictured Thompson center. 45 /50 cal Flintlock custom barrel from a Thompson Center Hawken Flintlock Rifle. And 15/16 inch across the flats. The barrel is in fair condition and is un marked so im not sure what caliber it’s for. The bore mics out at. 468 so it’s over. The barrel is 34 1/2 long and looks to be 1-48twist. The breech plug looks to be Thompson Center but doesn’t fit right as seen in the pics so that may need addressed. This would make a nice project barrel for someone. Its a investing barrel though it doesn’t have any makings on it. Please see all pics and ask any questions before purchasing. If you have any issues, please let me have the chance to make it right for you as I miss things when listing.