1 limitless is clip size, not does not use ammo.
2 known bug when wearing powerarmor
3 stop leaving power cores in powerarmor

Ah ok... thanks

Got myself a limitless double barreled shotgun...

It's my Boomstick and I love using it on ghouls

No reloads means that the combat shotgun is pretty much useless for me

Do you remember where you got it? Legendary enemies aren't as random as they seem so if you remember the spot then there's hope...a long shot but damn I want that.

It is the Neverending modifier for unique weapons that gives it. Found a Neverending Pipe Rifle and heard someone got a Neverending Sniper Rifle, but it seems like a very rare modifier compared to the others. Unique weapons dropped by Legendary enemies are completely random so even if they remembered where they got it, there is very little chance of that same Legendary enemy rewarding the same weapon.

A very powerful modifier is Two Shot. Especially, Two Shot Sniper Rifle, Two Shot Missile Launcher, or Two Shot Shotgun. The modifier causes two projectiles to fire at the same time.

True, it's unlikely that if the same legendary spawns in the same spot that they will drop the same loot. I have a 2 shot combat rifle but I'm more of a pistol and shotgun guy.