Thanks for the info. I'm not really worried about the powder going off. I will do as you said and not bring it in the house. It wil stay in a case in my truck. I'm wondering if the barrel will be ok for three days without any oil in it to protect it. I don't want any rust to start. I'm like you though, I'm a little worried about putting any oil back in the barrel since I haven't tried it that way at the range