Ok has anyone experienced this issue.. My character is not addicted to any chems or not on any stat boosting aid or am not wearing any gear that boosts stats. I just killed the swan super mutant and have the melee weapon he drops. I fast travel to sanctuary to store my gear and I notice when I go to store my items all of my weapons damage decreased by at least 3 points. I have tried even traveling without fast travel and once I enter the work station or my safe or even attempt to give dog meat my weapons the damage decreases still. Please any answers as Bethesda was not much help on this issue.

Could it be because of the perk, you get from a magazine, that gives you x% extra damage at night?

Nope. I have tried both night and day and still the same issue. I had this happen earlier on in the game but figured I was addicted to something so I didn't pay much attention. But now that I noticed it again I don't really even want to continue since my weapons are losing a significant amount of damage for an unknown reason.

does the damage decrease equal a certain percentage loss?

you could put up some numbers...pick a weapon you are sure lost damage...put down your total damage you are getting...list all mods attached...and list all the perks you have that would directly affect the weapon...maybe someone could then compare to theirs and see if there is a descrepency between the two..

Ok so just to refresh...my character is not addicted to anything nor is he on any chems or aid of such sort that will boost my damage. Only perks I have that pertains to increase of damage is level 2 rifleman and astoundingly awesome 7 (+5% damage at night). Also another note, I just checked and they are not losing that much damage just a few points but still unsure why.

Some weapons for sure that are losing damage are:

Furious Power Fist(Damage is 50)..... drops to 48

Hunting Rifle(Damage 54)..... drops to 51

Pipe Bolt-Action Pistol(Damage 35)....drops to 34

The damage decrease is when I try to transfer weapons to workshop, my safe, or even dog meat. If i decide to cancel and not transfer and look at my pipboy the damage does not drop. If I drop the weapons and pick them back up then the new damage point is now the decreased amount.