Lumber green target size must allow for:

• Sawing deviation - this can vary by equipment (+/- 0.015" to +/- 0.040")
• Shrinkage - varies by species and moisture content
• Planing - <.050" per face (varies with sawing deviation)

Green target sizes will have a direct effect on lumber recovery.  Reducing saw kerf and sawing deviation will allow decreased green target sizes which will increase lumber recovery.