I have an old double barrel made in Belgium. Paid it 100$ at a gun show a couple years ago. it was made around the 1890's. My question is: How do I know if it is safe to shoot high brass loads? I would like to shoot buckshot atleast. For now I shoot low brass reloads and commercial 7.5. Just those knock me on my ****! Im not sure how to know if the barrel is safe for those hotter loads.