Originally Posted By: Krakow Kid

Now, of course, thinking of proof marks on my OWN guns, for God's sake, I feel the fool; 1 oz, 1 1/8 oz etc. My eyes always went for the pressure and shell size. How in the world did I think they arrived at the amount of shot for the gun to be limited to?

So now I must add my voice to the masses and chime in, what size shot do they use and is it only one size; Is there a correlation to bore size, i.e. 10 bore gets size X shot, 12 bore gets size Y shot, etc.?

I've wiped the scraps of ignorance from my eyes and I now see a door blown off its hinges.


I think it's based on gun and barrel weight.