Re: U.S. and British rocket effectiveness against armor
"It was estimated that the salvo of all eight rockets would result in a one-in-twenty chance of hitting a target the size of a Panzer tank".
"...However the RAF 2nd TAF was equipped with RP-equipped (RP=Rocket Projectile) Typhoons which were instrumental in preventing German tanks from reaching the front. Studies of the 2nd TAF's rocket equipped 124 squadron showed that it only destroyed 12 tanks in June [1944] using 3,700 rockets for an immense expenditure of 308 rockets per tank destroyed..."
"...The major disadvantage of the rocket in a ground support role was its sensitivity to pilot errors especially in the face of anti-aircraft fire. Incorrect airspeed or glide angle along with any errors in range or wind estimation could cause inaccuracies..."
Source: U.S. Aerial Armament in World War II The Ultimate Look Vol. 3: Air Launched Rockets, Mines, Torpedoes, Guided Missiles and Secret Weapons. William Wolf, Schiffer Military History, 2010
Does the U.S. 5" HVAR or British 60lb RP have enough armor penetration and destructive power to destroy tanks? Certainly. The problem is hitting the darn things.