Ahmed577,

I know it is not probably liked on a nice Purdey but the Leupold lower variables such as 1.5-5x are slimmer and smaller for such firearms and still work well.

The German and Austrian scopes usually are heavier with 30mm tubes.

I know most guys prefer a Zeiss, Swarovski, Schmidt & Bender, etc on their night UK and European doubles however. Irrespective of their lesser balance.