You have a very old firearm with no data stamp. Before using it, what should you do?

It's essential to have an old firearm examined by a qualified gunsmith before attempting to use it. Firearms that lack a data stamp might not have critical safety information readily available, such as their caliber or specific design specifications. A gunsmith can carefully inspect the firearm's condition, assess its structural integrity, determine the correct ammunition type, and ensure it complies with safety standards. This professional examination is crucial to prevent accidents that could result from using outdated or incompatible ammunition, which can lead to malfunctions, potential injury, or even fatal accidents. Relying on unverified information from forums or attempting to fit ammunition without proper knowledge can be unsafe and is not advisable.