Great input.
One thing I've noticed is that advertisers (dealers) do not speak apples to apples.
One dealer will give "Minimum Wall Thickness" to mean the minimum wall thickness ANYWHERE in the bore of the gun.
Another dealer will say "Minimum Wall Thickness" and mean the minimum wall at 9" from the muzzle.
lastly, I've noticed people stating wall thickness at 9", but I believe from the numbers they are espousing, they are measuring 9" from the breech, not the bore.
What is the ethical, technically appropriate way to describe a gun and which ways are considered unscrupulous?