What does an average horse bit weigh?

well it completely depends, some people say that a thicker heavier bit is better as it spreads the weight and pressure in the horses mouth. but this totally depends on 2 things, the ability of the rider and their skills and stregths or weaknessess but also the size of a horses mouth... this rule may well apply with a heavy cob or even section D, but with a horse with a smaller finer mouth (like my dutch warmblood) then putting a larger bit than the small one i have in could hurt and cause problems with her mouth in the near future causing to much pressure on their already fragile soft mouths.