Here is some links on what was used at Bisley
The last two months of Target shooter magazine.
August September has 7mm info as well
http://www.targetshooter.co.uk/
http://www.freewebs.com/fclassuk/2009wfcc.htm
Trevor
i recently acquired the same scale shown in Dennis pic it is an ohaus 10-0-5 scale. it seems to read finer graduations then my present 10-10 ohaus. I picked mine up off of ebay.