A gunbarrel is a crucial part of gun-type weapons such as small firearms, artillery pieces, and air guns. It is the straight shooting tube, usually made
ISBN 978-1-86500-159-3. Shephard, Mark (1998). A Lifetime in the Bush:The biography of Len Beadell. Adelaide: Corkwood Press. ISBN 1-876247-05-3. "Author to speak
dictionary. In artillery, caliber or calibre is the internal diameter of a gunbarrel, or, by extension, a relative measure of the barrel length. Rifled barrels
freebore (also free-bore, free bore, or throat) is the portion of the gunbarrel between the chamber and the rifled section of the barrel bore. The freebore