Depends on the specific alloy, style of shooting (primarily rapid fire vs. primarily slow fire - this affects bbl. temp), sustained fire (or not), etc. There are several variables. I think for 4150 without hard chroming or nitriding it's around 4k rounds of sustained full auto fire to kill a 5.56 bbl.What type of round count can one expect from a Chrome Moly 1:9 barrel?
You got it!Additionally, how do you know when the barrel is done? I assume accuracy starts to erode gradually.
Are you talking chrome lined or unlined?What type of round count can one expect from a Chrome Moly 1:9 barrel? Additionally, how do you know when the barrel is done? I assume accuracy starts to erode gradually.
yes heat will hasten metal erosion. If your handguards smoke or soften you may be degrading your barrel's accuracyHeat is the enemy of all rifle barrels. Take everything said here so far and go from there.
JayPee