I have been shooting moly bullets for 20 years to slow down Copper fouling
They are not necessary at 2600 fps or less.
They are not enough at 3600 fps or more.
Moly may not be needed with bore coat, but I do it anyway.
Moly may not be needed with anti Copper fouling powder, but I do it anyway.
Moly vs no moly is not always as big a deal as custom $400 barrel vs Winchester or Remington factory barrel.
The custom barrels are lapped smooth. But some factory barrels look rough, but are slow to foul.
