Choke size?

[daisyrob1]

Evening, can anyone tell me the chokes on a shotgun I've acquired both barrels have 18,3 stamped on them which I presume is the bore, the top barrel as 17,2 bottom 17,6 tried to work it out but I'm obviously to thick👍

[London Best]

I make that 3/4 and super full. But the constriction depends on the bore size just before the choke, not the proof size 9 inches from the breech.

[wymberley]

A tight gun. The barrels are (were) 0.720" ........ oh heck, as above -  WHEN MADE/PROOFED

[daisyrob1]

1967 Italian

[dipper]

Most of the Italian s/B/S have super tight chokes.had one measured with over 50points of choke.

[daisyrob1]

Blimey! My uncle who gifted the gun to me bought the gun off his mate in late70s who in turn had the gun from new, his mate only shot game no clays all walked up stuff👀my uncle as never fired it he worked on a open cast and one of the drivers asked him to bring it in on nights to see if he could get a fox that was mooching around, he had the fox with one shot he told my uncle (bloody he'll Brian that's a hard hitting gun. 

[Robertt]

There should be asterisk marks stamped on the barrel i.e. *

* =full

** = 3/4 and so forth.

 

Edited December 6, 2019 by Robertt

[Gunman]

Get your gunshop to measure them . A gun of this age probably had quite tight chokes when imported and the chances are that it has since been bored out , so any barrel markings may be misleading .