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Home > Vintage Gun Journal > Cartridges for Vintage Guns.
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Gunsmithing & Technical|June 2017
When selecting ammunition, please consider the environmental impact of game shooting. We recommend using paper-case, fibre-wad loads, wherever possible. The cost differential is negligible and the benefits in-keeping with the conservation-minded aims of our sustainable sport.
Original chambers.
English guns of the pre-war period will usually be chambered for 2 1/2″ cases (ammunition now sold as 65mm).
Some wild-fowling and pigeon guns will be chambered for 2 3/4″ cases (ammunition now sold as 70mm).
A few wild-fowling guns were made with 3″ chambers (ammunition now sold as 76mm).
Some English guns, originally made with 2 1/2″ chambers, may have been altered and re-proof tested with 2 3/4″ chambers.
Case Lengths
Imperial Metric Equivalents
2 1/2″ 65mm / 67mm /67.5mm
2 3/4″ 70mm
3″ 76mm
This is from BGAC SITE
Suitable Ammunition for British Shotguns
We shoot British 65mm cased ammunition in all our guns (even those with 70mm chambers) We believe that modern ammunition, of quality in 65mm (2 1/2″) cases is equal to all normal game shooting activity. Most people over complicate the issue. As a practical measure, we use Gamebore Regal 28g and 30g 12-bore loads and Gamebore Regal 28g, 16-bore loads. No.6 shot with a fibre wad will kill anything you hit with it within 40 yards and these loads will be kind to your old guns as well.
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