Fred the dog

Hello, I'm new to this rifle stuff so bear with me. I've read that you can overheat a barrel and ruin it. So the question is how many rounds, of say XM193, does it take to overheat a barrel and screw it up forever? The barrel in question is a 20" chrome 1 in 9 twist. Thanks

Albert Shear

Unless you are shooting full auto and doing it regularly you should not have to worry. Shooting XM193 does help prolong the life as well as chrome lining. The 1 in 9 twist is a good compromise. It really just is not going to make a lot of difference in semi AR during normal use. Round count is not something you can say each and every barrel should reach because every specimen is different. I have one SP1 rifle with well over 20k rounds and is still acceptably accurate.