Unfortunately the bore is internally pitted, I had to take it apart and carefully cleaned it with big bore 45 pads which are extremely soft, used a good natural oil. Its a square plug with a hole in it, so presumably a brass pin runs through it
Thank you for the wealth of information, it did have the breach plug, however it was easily removed by finger and a little loose. My Girlfriend's father wants to fire it which I find a bit sketchy to do as its such a beautiful and historic piece. Risking it is not wise.
Hello!
I picked up a beautiful Tanagashima for my girlfriend's father. I was wondering if anyone here could help me translate the maker and anything else on it! Appears to he a little larger than 45 cal.