Does anyone measure barrel temp? At what temp is a barrel too hot and needs to be cooled?
There is no definitive answer to this question since it can vary depending on the type of gun and the ammunition being used. However, a generally accepted answer is that the barrel of a gun can get hot enough to cause first or second-degree burns.
When a gun is fired, the expanding gases created by the burning powder create tremendous pressure on the bullet as it travels down the barrel. This friction between the bullet and barrel creates heat, and extended firing can cause the barrel to heat up to temperatures over 1200 degrees Fahrenheit. While this may seem extremely hot, it should be noted that many materials can withstand these kinds of temperatures without suffering any significant damage.
However, extended exposure to these kinds of temperatures can cause the metal of the barrel to soften, which can lead to a loss of accuracy and potentially dangerous situations. For this reason, it is important to take breaks periodically when firing a gun to allow the barrel to cool down.