New AR - Do I worry about barrel break in?

[DesertMarine]

The main reason for breaking in a barrel is to smooth out a barrel or take out any burrs that are in the barrel.  When a barrel is crowned you have burrs at crown.  If the gun maker or whomever put the crown in did not take those burrs out, it is done when breaking in.  If you shoot enough rounds all barrels will eventually "break-in", it is a process to get your barrel in a consistent  shape.  It all boils down in how much time and effort you want to invest in a barrel.  I'll take the time to break-in in the manner that I described earlier or I'll fire-lap the barrel.  In fire or hand lapping, if you do not know what you are doing, you can ruin a barrel very quickly.  Done right, you get great shooting barrels.

Good barrels will not normally wear out at 1000 rounds.  Most wear out at around 3500-5000 rounds, but each barrel is different and willl wear out differently.  Some calibers, mainly hot wildcats or like a .243 will wear a barrel out "quick". 

[beagleman]

I do for all my guns, THANKS DAD