I have been testing these for a long time and through the whole mountain top quest last season noticed a few things.
With proximity grenades and Bakst radius. More blast radius helps on the heavy nades for one hit kills.
AND rampage does essentially nothing on the heavy nade launchers.
All my “god rolls” or rolls I kept have mainly rampage.
Make it do something or remove the perks from dropping that essentially are just a waste of a slot.
Thoughts and peace!!???