I think that if you can consistently hit your target at hunting distances with the arrow of your choice then that is good enough. I have worked in tool shops for 20+ years. Most of that time building plastic injection molds. So I know what a tolerance is. And I know that a lot of the time tolerances are not met. We are talking arrows here, even the most expensive arrow money could buy is still a very low cost item in the manufacturing world. You can bet your a$$ that out of 100 arrows made, probably less than 5 would ever get checked. That's not what a salesman would tell you, but thats what would happen. They are too busy boxing up truckloads to sell to everybody that buys into their BS that they can make something within .001 that is 30 inches long. They know most people don't have the equipment or the knowhow to check them. Next time I buy arrows I will accurately check them at work at post the true specs here.