Quote Originally Posted by m12lrs View Post
That is what load development is all about. Finding that harmonic node

All the different muzzle devices, flash hiders, muzzle brakes, cans effect the harmonics. You just don't know if it will be good or bad
No, you DO know. It will be good. It adjusts to tune the barrel. First you develop a load, then you adjust the tuner to improve it. They work.

They might not be necessary, but they work.