If you shoot jacketed ammo you will ruin the barrel. It was made of soft/mild steel and modern jacketed ammo will wear down the lands and grooves. Should only shoot lead bullets through it.I have a 1884 springfield trapdoor. I have a problem with accuracy. At a 100 yards it shoots about 3 feet high. I put a new buffington sight on it. I was wondering if the barrel is bent.