I own a traditions muzzleloader and I looked for the psi rating stamp the artical talks about and I found no pressure related stamp at all. My rifle is supposed to handle 150 gr powder charge,but I have never loaded it to that.I find it hard to believe that a company would sell a rifle that could be unsafe.Maybe those stamps are an insurance policy for the spainard company to not be responsible for the rifle beyond a certain point.The must be tested in the U.S to the standards they claim the gun can handle.I would think that by now we would have had a serious red flag thrown up.There are tens of thousands of these rifles out there and I have never heard of a barrel exploding due to a design flaw.If you know of any such incidents I would like to hear it.