Does anyone measure barrel temp? At what temp is a barrel too hot and needs to be cooled?
A gun barrel can get extremely hot, particularly when firing rapidly. The heat is generated by the friction of the bullet against the barrel and by the explosion of the propellant. This heat can cause problems with accuracy and also shorten the life of the barrel.
It is important to keep your gun barrel clean and well-lubricated to minimize heating. When cleaning a heated barrel, be sure to wear gloves and use a brush designed for firearms. Never use any chemicals on a hot barrel as this can damage it. If possible, allow the barrel to cool completely before cleaning it.
In general, it is best to avoid a rapid fire with any weapon. If you must fire rapidly, do so in short bursts to allow the barrel to cool between shots.