Wait, the extra hit for explosive weapons is per shot?
Meaning a Devastator with a heavy bolter can fire 10 shots full-autp, bolts are explosive which is +1 hit per shot, meaning 20 hits maximum, but Unrelenting Devastation gives an extra point of magnitude, meaning a Devastator can do 40 magnitude if all their shots land?
That seems a bit much! Even for space marines!
The idea that the Marines are becoming "lesser" over the generations is always something that I find fascinating as a ways of "balancing" the various editions and interpretations.