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Re: Thomas Bland BLE proof marks Geoff Roznak #668432 12/16/25 09:51 AM
Joined: Jan 2006 Posts: 9,815 Likes: 490 AZ but dreaming of KS Drew Hause Sidelock
Drew Hause Sidelock Joined: Jan 2006 Posts: 9,815 Likes: 490 AZ but dreaming of KS	I would be quite interested to know, since I don't After 1887 the bore was marked based on using a plug gauge measuring at 9". If the plug gauge of .729 couldn't pass, the barrels were marked 13/1 but could be .719" to .728" The bore was marked in inches starting in 1954 but IS THAT THE ACTUAL MEASUREMENT or was the plug gauge still used? Could .719 still be up to .728"? After 1989 the bore was marked in mm (18.5 = 0.728) https://sites.google.com/a/damascusknowledge.com/www/home
	1 member likes this: Geoff Roznak

Re: Thomas Bland BLE proof marks Nitrah #668440 12/16/25 12:24 PM
Joined: Jan 2002 Posts: 422 Likes: 11 Further Up North, WI Geoff Roznak OP Sidelock
OP Geoff Roznak Sidelock Joined: Jan 2002 Posts: 422 Likes: 11 Further Up North, WI	Originally Posted by Nitrah It seems strange to have 1 barrel .729 and the other .719 but I have a theory, based on having owned several Britt boxlock waterfowlers. At the time some of these guns were made shells with felt wads were used and the gunmaker wanted to insure combustion and perhaps increase performance by having tighter constriction in the barrel. Given the manufacture date of - I think - 1963, do you think that's still a possibility? Last edited by Geoff Roznak; 12/16/25 12:25 PM.

Re: Thomas Bland BLE proof marks Geoff Roznak #668450 12/16/25 03:23 PM
Joined: Jan 2002 Posts: 10,846 Likes: 1460 mpls, mn. Ted Schefelbein Sidelock
Ted Schefelbein Sidelock Joined: Jan 2002 Posts: 10,846 Likes: 1460 mpls, mn.	Originally Posted by Geoff Roznak Originally Posted by Nitrah It seems strange to have 1 barrel .729 and the other .719 but I have a theory, based on having owned several Britt boxlock waterfowlers. At the time some of these guns were made shells with felt wads were used and the gunmaker wanted to insure combustion and perhaps increase performance by having tighter constriction in the barrel. Given the manufacture date of - I think - 1963, do you think that's still a possibility? Felt wads were never passé in Europe. The last pallet of Eley 16 gauge I bought was felt wads, VIP was the load, if I remember correctly. Purchased early 2000s. ‘Course, they might be, now. But 1963, no way. Best, Ted

Re: Thomas Bland BLE proof marks Geoff Roznak #668452 12/16/25 04:44 PM
Joined: Jan 2006 Posts: 9,815 Likes: 490 AZ but dreaming of KS Drew Hause Sidelock
Drew Hause Sidelock Joined: Jan 2006 Posts: 9,815 Likes: 490 AZ but dreaming of KS	OK. Found several sources stating "A significant change in 1954 was the requirement to stamp the actual measured bore diameter on the barrel flats, not just the nominal gauge number." https://sites.google.com/a/damascusknowledge.com/www/home
	1 member likes this: Ted Schefelbein

Re: Thomas Bland BLE proof marks Drew Hause #668461 12/16/25 08:10 PM
Joined: Jan 2002 Posts: 422 Likes: 11 Further Up North, WI Geoff Roznak OP Sidelock
OP Geoff Roznak Sidelock Joined: Jan 2002 Posts: 422 Likes: 11 Further Up North, WI	Originally Posted by Drew Hause OK. Found several sources stating "A significant change in 1954 was the requirement to stamp the actual measured bore diameter on the barrel flats, not just the nominal gauge number." That's good to know...and this gun is almost 100% guaranteed to be made post-1954.

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