Western Australia has powered to an final day 301-run Sheffield Shield victory over Tasmania at the WACA Ground.

After adding a quick-fire 70 to start the morning to move to 9-272 for a lead of 364, the home side then bowled Tasmania out for just 63 in their second innings.

Nathan Coulter-Nile (3-18), debutant Matt Kelly (1-7) and Simon Mackin (3-20) ran through the Tigers line-up.

Coulter-Nile in particular caused headaches for Tasmania, bowling full and moving the pink ball around trapping Jake Doran (4) and Alex Doolan (0) leg before.

Tigers captain George Bailey was then caught and bowled by Coulter-Nile for three.

Tasmania were 4-13 and then 6-25 when Matthew Wade was caught behind off Mackin for six and Ben McDermott was another LBW victim for a duck.

The Tigers’ lower order all followed cheaply, with all ten batsman dismissed unable to record double-figure scores.

Beau Webster fought hard for Tasmania to be unbeaten 33 and was a small positive to take away from a disappointing effort with the bat.

It was Tasmania coach Adam Griffith's first Shield game in charge and he made no excuses for the final day capitulation.

"Really disappointing is probably an understatement. You scratch your brain and question what you do, but this group has been in this position unfortunately before over the last few years," Griffith said.

"We have to find a way to change that mindset. It's just about the contest and actually putting your hand up and saying you are going to compete. Unfortunately we didn't do that today."

The Western Australia vs Tasmania scorecard is available here.