It is not that the new chrome lined barrels are better machined, it is that the chrome plating is more uniform in thickness than the old USGI barrels.
In any barrel, the throat will wear before the bore does. As stated above, 4-5k rounds usually show a degradation in accuracy. Don't just blame the barrel, though. Your bedding may be worn as well.
You should never use a bore scope to check a barrel. If you do, you won't sleep at night and will most likely sell every barrel you have. RNGR2
The only way to tell if a barrel is accurate is by shooting it. Pitting, peeling, flaking, etc, are unsettling to the eye, but not necessarily to the bullet.
In any barrel, the throat will wear before the bore does. As stated above, 4-5k rounds usually show a degradation in accuracy. Don't just blame the barrel, though. Your bedding may be worn as well.
You should never use a bore scope to check a barrel. If you do, you won't sleep at night and will most likely sell every barrel you have. RNGR2
The only way to tell if a barrel is accurate is by shooting it. Pitting, peeling, flaking, etc, are unsettling to the eye, but not necessarily to the bullet.
