Daryl is right on that, some Gunmakers tried to tout their particular barrel length as their signature design. Many Woodwards will be found with 29" barrels, 27" was popular with Cogswell & Harrison and Rosson of Norwich. Holland & Holland also played around with 27" tubes for a while. Churchill had a thing about 25" but it seemed a short lived thing that never really caught on. Earlier guns up to about 1910 were mostly found with 30" barrels then after that 28" became more common; that is in 12 bore. Today it is hard to tell. Some guns intended for high driven pheasant are being made with 32" and 34" barrels. I would say anything between 28 and 30 inch would account for about 85% of those commonly in use. Lagopus.....
