Hmmm

I am not sure of the 96 rule, well in the sense of rifles, as this subject is upon the powder load behind the projectile, as opposed to the bullet weight.

Thus i site once again the example; one 12 bore rifle weighs say 14.5 lbs, another weighs 11 lbs, both are 12b caliber, yet one has a 3" chamber and the other 2.5"

The same applies to other old guns, some even in express calibers seem heavier, though with them it makes no sense, as unless im mistaken, those cartridges cannot be loaded up beyond 7 drams bp or God knows how many grains N for bp......

However, with the 'bore' rifles its another kettle of fish......

Any clues?

Ben