As this is a .223 thread, I would point out that the need to hold the forend or the scope is largely eliminated. Compared to the typical .308, 30-06, 300 win mag and everything in between, the need to control the forend of a .223 because of recoil is significantly reduced if not eliminated.
Now, holding the scope or forend to prevent wobble as a part of building a stable position is another thing.
I have learned that a properly sized and configured rifle system and proper body position reduces the benefit from holding the forend on precision.