I'm playing NV for about the 8th time now and I have Cass as my companion. Because I'm strictly using energy weapons, I give her all the good guns and ammo i find. However it seem that all the hunting guns( Hunting Rifle, Hunting Shotgun, and Hunting Revolver) duplicate themselves in my inventory after I give them to her.

It's kinda cool, and saves me costs on repairs, but it svck because its only happened when my gun skill is only 22.

Are there any other glitches like this( besides infinite caps/exp.)?

Are you sure it's duplicating, and that they weren't actually invisibly "stacked" on top of each other? Altho I guess if it happened only at a certain guns skill, that does sound more like a glitch.

There was one game where I had a sudden rash of duplicating ammo rounds, similar to that...when I took ammo out of companion inventory it would suddenly increase by double when it was placed into my inventory. I have no idea what triggered it, and it hasn't happened since.

I'm sure. the stacking has happened as well but those were with more common items such as the leather armor or 9mm pistol.

This glitch occurred only with the hunting weapons thus far which are fairly rare.

It's been happening since Oblivion, it's a display glitch two Items are in the list but one will disappear if you try to get it. leaving the real item left.