OGSF 5g or Ephra 2.0

[LionKing]

OGSF should work faster; EHPRA 2.0 should be a more all encompassing and deep result.

I'm curious about "deep". If we take a fixed time interval of several months, build up two very deep concrete walls and start blasting one with the rifle and one with the shotgun, which one will have gone deeper in the end? I'm guessing the rifle, because it always shoots at the same spot, while the shotgun chips away at the whole surface of the wall. But since fear is at the root of a lot of problems, I'm thinking it might collapse big chunks of off the whole structure once the whole has been dug in deep enough. Though I guess this all depends what is the power ration between the rifle shot and whatever pellets you get from the shotgun to that same area of the wall.