MAGNIFICENT Glasgow got revenge for all their setbacks at the hands of Munster last season when they thrashed their biggest conference rivals, running in a bonus point try on their way to the remarkable win.

"That's better," said new coach Dave Rennie afterwards. "It was a step up from the last two or three weeks, more in intensity and accuracy, our ability to build pressure. Our defence was outstanding against a strong Munster side who we know would ask questions of us.

"It is going to take time. We are still in a positive mindset but we have made a handful of changes to our game that we think are going to be important. We have not seen much evidence of that in the last three weeks but it was a lot better tonight. We were far more brutal and carrying clean, so we got quicker ball. Our skillset, decision making and ability to keep ball alive and offload was a real feature of our game."

He may feel it was still short of the complete performance, but it was certainly closer and by a long way their most confident showing of the season so far. Straight form the kick off Glasgow were on the attack and, in marked contrast to their earlier outings, the passes were sticking and the runners finding gaps.

There had been a few last-grasp tackles from the Munster scramble defence before the breakthrough came, Lee Jones stretching the defence down the right wing before the ball shifted across the field and Leonardo Sarto, newly on as an early replacement for shoulder injury victim Rory Hughes, found the space to race in.

Finn Russell converted and soon added a penalty, but there was a dire warnings for the Scots as soon as Munster did eventually manage to get their hands on the ball in attack, Rory Scannell, the centre, looping outside his wing to find space and outpacing the home defence to get his side on the scoreboard.

Any doubt that these games against Munster have an edge to them these days was settled with a mass brawl at the end of the opening quarter. It seemed to unsettle Glasgow more, however – they had a penalty coming but kicked for the corner and messed up the line out drive.

It ushered in a period of stalemate as the teams cancelled each other out until a missed penalty from Munster’s captain Tyler Bleyendaal seemed to settle Glasgow again and two quick scores pulled them further clear.

The first was another penalty after Sarto had set up the attacking position, the second a superb try straight from the kick off as Ali Price nipped blind and quick hands from Tim Swinson and Ruaridh Jackson sent flanker Callum Gibbins racing down the touchline. He did not have the pace to score himself, but Lee Jones, the wing, was soon on his shoulder and he did.

It made sure the Scots had a healthy lead at the break, soon to be extended. Munster had a man in the sin bin and they had a penalty coming when Peter Horne spotted space out side. Ruaridh Jackson’s offload to Jones may have caught the wing unawares, but luck was with them as the ball bounced back straight into the arms of Nick Grigg for the third try.

"It was a neat tap-on pass," Grigg suggested mischievously afterwards. "It was amazing, we knew we had it in us to put in a performance like that but a bit of inaccuracy was letting us down. It is great to finally put in a performance like that.

"We have been rolling with a few wins in the last few wins but this was the icing on the cake – there is more to come."

There was still the risk they might self destruct, as shown when George Turner’s pass was intercepted in midfield and Chris Farrell, the centre, ran in an easy score, but by, now there was an element of swagger about the way Glasgow were playing and instead of succumbing to the visitors' pressure, they added another score to settle nerves and the result.

Sarto, who was in obvious discomfort all game, turned from finisher to provider as he powered his way through four tackles before finding Scott Cummings, the lock, on his shoulder to take the scoring pass.

"He might have thought he was coming off, but we needed him," said Rennie. "It will be good for him. It was not an injury that he needed to come of but it was uncomfortable. There were times he needed to bite through the mouth guard but I am really pleased, he went really well."

There was still time for a final drama with Fineen Wycherley, the replacement Munster lock, coming into a ruck illegally, smashing Tim Swinson with his shoulder and getting a red card as a result.

Scorers: Glasgow Warriors: Tries: Sarto (4), Jones (36), Grigg (45), Cummings (64). Cons: Russell 4. Pens: Russell (9, 33, 56)

Munster: Tries: R Scannell (14), Farrell (46).

Scoring sequence (Glasgow Warriors first): 7-0. 10-0, 10-5, 13-5, 20-5, 27-5, 27-10, 30-10, 37-10,

Glasgow Warriors: R Jackson; L Jones, N Grigg, P Horne, R Hughes (L Sarto, 3); F Russell (S Johnson, 38-41), A Price (H Pyrgos, 66); J Bhatti (A Allan, 56), G Turner (P MacArthur, 56), Z Fagerson (D Rae, 56-75), T Swinson, S Cummings (B Alainu’uese, 65), R Wilson (C), C Gibbins, A Ashe (R Harley, 56).

Munster: A Conway; D Sweetnam (S Zebo, 46), C Farrell, R Scannell, A Wootton; T Bleyendaal (C) (J Taute, 48), D Williams (J Hart, 48); L O'Connor (D Kilcoyne, 50), R Marshall (N Scannell, 54), S Archer, J Kleyn, B Holland (sin bin: 44-54); S O'Connor (R Copeland, ), T O'Donnell, J O'Donoghue (F Wycherley, 38, sent off: 76).

Referee: N Owens (Wales)

Attendance: 7,351