North Launceston has taken the ascendancy in the first half of the TSL derby encounter against Launceston at UTAS Stadium.
The home side slammed on the opening three goals in quick succession to accelerate the pace in the first term following a sluggish start in dewy conditions on Friday night.
Taylor Whitford's men flexed their muscle further after the break to hold a 7.7 (49) to 2.6 (18) lead.
Ben Simpson broke the shackles after nearly 19 minutes of no goals, the former Tasmanian Devils under-18 talent slotted a set shot from a clever centring kick backwards.
Skipper Brad Cox-Goodyer added the Bombers' second little more than two minutes later from the 50-metre arc.
The 2017 Alistair Lynch TSL medallist's goal roused up opponent Jack Donnellan as several players from both sides joined the scuffle.
Jay Foon claimed a third goal soon after off a fumbled Blues grab in the goal square, in which Casey Brown questioned the ball coming off the Bomber forward's knee.
Launceston got the vital comeback after the siren when captain Jay Blackberry got under a high ball for a strong pack mark and shot from 35 metres out in front.
Cox-Goodyer continued to display his class again from the edge of the 50m mark, with a long left-foot kick on the run to deliver the Bombers a three-goal lead in the opening stages of the second quarter.
Sherrin Egger goaled next from a set shot following an innocuous free kick to push the margin out to 24 points.
Bart McCulloch then put the simplest goal away from point blank range when the Blues gave away a soft 50m penalty away.
Cox-Goodyer then stretched the margin out to 36 points approaching time on when he out-positioned Donnellan, marked and sprinted into an open goal for his third.
Much like their late opener, the Blues scored their next at the end of quarter from Jacob Boyd snapped a hurried shot within a minute of the Bombers' seventh.