Cause i got bases (safehouses) spread all across the desert, and supplies and weapons worth more then 50000 caps in all. In Skyrim almost none of the cells are safe, but fallout 3 many cells were safe far as i know so just wondering.

The safehouses are relatively safe - apart from the vistors of each faction that come in might take any guns or armour you have lying around - IIRC.

It'd recommend http://fallout.wikia.com/wiki/Harper%27s_shack as a safehouse as all the boxes are safe and you can leave guns lying around without fear.

ohhh [censored] brotherhood of steel [censored] took my machinegun Good thing i had 5 spares. but what about normal places like rauls shack or stuff like that?