Oregon's handgun laws are constantly changing, although every effort has been made to ensure that the below posted laws are current, American Firearms Training Corp. cannot be held liable for misuse of this information. To find the most up to date information, please visit the Oregon State Police's web page.  The following text is from their website:

Interstate Transportation of Personally-Owned Firearm

The following is a citizen's guide to legal transportation of personally-owned firearms for hunting, competitive shooting, vacationing, and changing residence between states.

Introduction

Federal law does not restrict an individual (except convicted felons, persons under indictment for felonies, mental defectives or incompetents, illegal users of controlled drugs, illegal aliens, veterans dishonorably discharged, those who have renounced their U.S. citizenship, and fugitives from justice) from transporting firearms across state lines. Thus, there is no federal interstate transportation permit for firearms.

Many states have laws governing the transportation of firearms. In addition, many cities and localities have ordinances restricting the transportation of firearms. Travelers must be aware of these laws and comply with the legal requirements in each jurisdiction. There is no uniform state transportation procedure for firearms.

Federal Law on Transportation of Firearms

A provision of federal law serves as a defense to state or local laws which would prohibit the passage of persons with firearms in interstate travel.

Notwithstanding any state or local law, a person shall be entitled to transport a firearm from any place where he may lawfully possess and transport such firearm to any other place where he may lawfully possess and transport such firearms if the firearm is unloaded and in the trunk. In vehicles without a trunk, the unloaded firearm shall be in a locked container other than the glove compartment or console. Necessary stops, e.g., gasoline and rest, seem permissible.