I made a character a week or so ago, who was an explosives character. I managed to find him the Alien Blaster at level 6(pretty wild, huh?) and decided to clear out the Dead Wind Cavern and destroy the Legendary Deathclaw and grab myself the "Mercy" Shortly afterwards, I went to a vendor and found the Grenade Machinegun, which IMO, is better than Mercy(Mercy uses the same ammo as my grenade launcher, which is bad) How somebody sold a Grenade machine gun at level 6 is beyond me. Anyways, I went to Nellis and picked up a bunch of HE rounds for it, and went on a massive killing spree! I went to Quarry Junction and wiped all the Deathclaws out! I wanted to do some long range killing, so I found the Annabelle, and used that with either HV or HE rounds, and it's amazing. They are perfect for eliminating a pack of cazadores, because 1 shot= hits entire pack, good chance of crippling the wings.
If you can get those 2 weapons, they are absolutely amazing! I always avoided explosive weapons, but they are probably my favorite weapons now. Now I just hope Obsidian doesn't do anything to them.
I just wanted to express my new found love for these guns, please excuse me.