004' in bore size will make very little difference to the choke IMHO for normal shooting. I dont think they were so fussy back then. The bore sizes varied as I remember some were at.728' /18.5mm others I have seen came in at 724'/18.4mm.

Out of curiousity where on a shotgun would British proof marks be placed? (I intend to test shoot the gun properly and count the pellets to determine the choke, haven't gotten around to it yet though.) I know that the plug gauge only measures the barrel opening diameter though while choke would be the _relation_ between barrel diameter and opening diameter.

Reason for asking is that while the stamps on the gun indicates 1/1 // 1/2 chokes the gun was measured in a gun shop with a plug gauge and that indicated chokes being 1/2 // 1/4-1/8. and yes, I am aware that getting more info on the gun itself will not cure the largest issue when it comes to it hitting those clay pigeons - I simply need to practice You are correct I am located in Sweden and guess this gun has not been imported via Britain, hence no British proof marks (think I managed to include all stamps/markings in the Do you know if all the Miroku 800s were. (more, and also larger, pictures are available)

One final thing regarding the stamps while I think I can pick out most of the stamps and their menings I am curious about the '2 15' stamps visible in one of the pictures, any idea what this can signify? The year when also Miroku introduced the mfg year identification in their serial numbers? Pieces of information has led me to believe that the gun is manufactured before 7 sometime (based on when I think Browning/Miroku possibly introduced the mfg year identification in their serial numbers as well as indication of when Miroku seized production of the 800 model).ĭuring what years Miroku actually manufactured the 800 model? Have acquired an older Miroku o/u, said to be a model 800 of unknown age and curious as I am I am trying to find out more about the gun.īased on the attached pictures can it be positively identified as a Miroku 800 model?Īs for age it would be nice if it had followed the Miroku / Browning standard of including mfg year in the serial number (character coded) but obviously this gun is older than that.

Old miroku shotgun models