Changes

A good plan is to find two [[Prefix#.2B_points_to_Barbarian_Skill_Trees|echoing weapons]], and use them on your weapon switch. Echoing is a prefix that gives +3 to all Warcries, and obviously two of these gives +6 to every skill in this tree. You switch weapons, cast Battle Orders and any others, then go back to your normal weapons. Dual Echoing is very useful for Find Item and Potion also, taking them instantly to Slvl 7 (or higher, with other equipment) which is good odds on both.

You can use +2 Sounding [[Prefix#.2B_points_to_Barbarian_Skill_Trees|sounding weapons ]] also, but obviously they are not as good. Any time you are in town, check the NPC for echoing weapons, and since most Barbs spend some time shopping for a big weapon at some point, you should find Echoing stuff at the same time. Buy anything you can dual wield with this bonus, normal weapons if possible, since they have lower Str/Dex/Level requirements.

All the Weapon Masteries give a % chance of hitting for double damage, just like the Amazon's [[Critical Strike ]] skill. This bonus is calculated after all other damage, including bonus from strength and skills, so it doubles the total damage, often a number in the thousands. This has always been the case, but the double damage bonus was not displayed in the skill description before D2X.