>>57795679There is literally only 1 special move in Rampardos’s level up learn set in Gen 4 and the strongest special rock move it knows is Hidden Power Rock.
In Gen 4, there is no real use to using special moves on Rampardos either. Even if you were targetting specifically Torterra in Gen 4 UU, you’re better off using Fire Punch since it lands the same 2HKOs without also gimping your bulk.