Copdock won the toss but elected to field, as Bury took advantage of the decision as both openers Alfie Marston and Justin Broad got off the mark early in the opening over, which Bury ended 5 runs without loss.
The two batsman rotated the strike on a regular basis to ensure Bury's score continued to tick over, with the first boundary arriving from the final ball of the 3rd over, Marston hitting the ball through the centre to pick up four runs.
The wicketkeeper-batsman then added two more boundaries during the following over, the first was fairly similar to the boundary prior whilst the second was guided cleverly down the ground for four more, as Bury ended the over 21-0.
Having held his nerve and battled to stay at the crease, Justin Broad was rewarded with his first boundary during the seventh over, after surviving a few appeals for LBW from the Copdock bowlers.
That boundary was followed by a regular flow of boundaries, with Marston starting the 8th over by smashing the 1at ball over the fielder before a couple of bounces took it to the boundary.
Marston then backed that up with another four runs later in the over, moving Bury within 7 runs of the team's 50 in the process.
Fittingly, Broad brought up the opening partnership's 50 with a boundary in the ninth over as Bury continued to keep the runs flowing nicely.
That continued into the tenth over, with the Bury batsman adding a mammoth 17 runs from the other - 16 of which from boundaries, three of which off the bat of Marston, whilst Broad ended the last at the end of the over, giving Bury a very healthy score of 67-0 at the end of the first ten overs.
It wasn't long until Alfie Marston picked up his half century, doing so just 12 overs in from 34 deliveries having added 10 runs in the over to reach his milestone.
Copdock however, did bowl well, often restricting the Bury batsman to the odd single or two throughout, requiring the hosts to find various other ways to keep the runs flowing, which was the case until the 14th over. Marston brought up the 100-run partnership with a single, before marking the milestone by cracking two great shots away to the fence, taking the score onto 109-0 with Marston unbeaten on 69, with Broad 32 not out.
Marston then picked up his 13th boundary of the innings in the 17th over, but fell midway through the 20th over.
Ben Claydon with the breakthrough for Copdock, catching the opener out to send his bails flying to end the partnership of 122 runs, with Marston out for an impressive knock of 78.
Captain Ben Seabrook joined Justin Broad at the crease, and got off the mark with a single to end the over.
The Bury skipper didn't take long to pick up his first boundary, doing just that in the 22nd over, moving Bury onto 136-1 in the process, whilst a boundary from Broad in the following over saw the hosts up to 144-1 at drinks.
The latter soon brought up his fifty during the 27th over, picking up a single in the process whilst Seabrook followed that up with two boundaries as Bury passed 150.
Bury began to find the fence on a regular basis after that, with Broad picking up two boundaries in the 29th over, before adding another four during the 30th over.
Seabrook then crashed another ball away for four in the 32nd, before Broad went within 16 of his century by ending the following over with 3 more boundaries.
The latter deservedly reached his hundred just a few overs later, marking it with another boundary to take Bury onto 230-1.
However in the following over, Copdock picked up their second wicket - breaking the 116 run partnership. After Broad moved onto 117 unbeaten with four more runs, Seabrook was dismissed just 9 runs shy of his half century from 56 balls after hitting Chris Shallow's delivery straight to Alex Oxley to take the catch, bringing former Bury captain Sean Park to the wicket.
Another boundary for Broad in the 40th over, followed by Park adding 3 in the next over as Bury brought up their 250.
Following that, Park (7 off 12 deliveries) looked to turn on the accelerator and help Bury close in on 300 but could only smash Freddie Heidreich's delivery up into the air for an easy catch for Nico Boje as Bury lost their third wicket for 251.
In response, Broad thumped a ball away for four more runs during the 42nd over, whilst Bury number 5 Josh Cantrell got off the mark with a single to start the 43rd over, followed by another boundary for the Bury opener.
Nine runs from the 44th over, including another boundary for Broad, took Bury within 28 runs of picking up a total of 300, before adding nine more runs in the 45th over.
Having batted out the majority of the innings, Broad (136 off 140 deliveries) added another boundary to start the 46th but it was soon the end of the Bury opener with Bury 285-4.
Heidreich (2-56 from 10 overs) picking up his second wicket with Beaumont taking the catch as Broad looked for another boundary.
Five runs later, new batsman Alastair Allchin (2 runs off 6 deliveries) soon departed as Matt Hunn sent his bails flying.
Bury though soon lost their sixth wicket, as miscommunication between new batsman Hugh Stanton and Cantrell (16 off 12 balls) saw the latter ran out by Heidreich with the bowler having all the time in the world to remove the bails.
James Sturgeon and Hugh Stanton however ensured Bury would see their allocated 50 overs through without further loss of wickets, with the former getting off the mark with a boundary.
Stanton (7 off 7 balls) meanwhile did likewise, thumping a fantastic shot down the ground for four to take Bury over the 300 mark.
There was time however for Stanton (13 off 11 balls) to add four more in similar fashion before Bury finished on 316-6.
Copdock meanwhile opened their run chase with Sean Cooper opening the bowling for Bury, which saw 2 lbw appeals go invain as a wide and four byes got the Copdock innings underway.
Alastair Allchin started from the pavilion end meanwhile, and got his bowling innings underway with a maiden, whilst both openers Atkins and Oxley got off the mark with a single each during the 3rd over, at the end of which the run chase had reached 11-0.
An impressive start from Bury bowler Allchin (1-18 off 7 overs) continued as just a single came from his 2nd over.
Into the fourth over of the run chase, Oxley (18 off 44 balls unbeaten) picked up two runs before Cooper was able to find the edge of his bat but went through for a boundary for the opener, before taking advantage to hit the ball down down the ground for four more runs, with Bury looking for an early breakthrough as Copdock had 22 runs on the board.
Bury meanwhile kept the runs tight in the next few overs, with the next boundary arriving in the eighth over. Atkins picking up the first and only six of the match as Copdock ended the over 33 without loss.
The next boundary arrived in the 10th over, as Atkins found the fence to move Copdock onto 40-0.
Allchin however made the first breakthrough for Bury early in the 12th over, Sturgeon in the slips taking the catch behind the wicket as Atkin departed for 16 runs from 23 deliveries as Copdock lost their first wicket with 43 runs on the board.
That brought wicketkeeper-batsman Jacob Marston (10 off 24 deliveries) to the crease, but his stay out in the middle didn't last long.
New signing Rufus Easdale picking up his first wicket in his first competitive over for Bury, as Marston looked to smash the spinner out towards the boundary down the centre but could only pick out Allchin who took a simple catch to reduce Copdock to 58-2 with the rain beginning to fall.
Due to the weather conditions, George Loyd also only got just the single over in before play was stopped as Suffolk white ball captain Jack Beaumont (unbeaten on 0 off 1 ball) arrived at the crease, whilst a boundary and a single for Oxley saw Copdock's run chase halted at 64-2 after 17 overs.
Due to the weather, no further play was possible as Bury won by 43 runs by the Duckworth/Lewis system.
Justin Broad's knock of 136 proved to be the biggest individual batsman score in the league's opening round of fixtures, which alongside important knocks from captain Ben Seabrook (41) and Alfie Marston (78) helped Bury to victory aided by important wickets from Allchin and Easdale (1-4 from one over) in Copdock's run chase.
Bury now look ahead to an important double header with Sudbury CC next week, with the first coming in the Suffolk T20 Cup at Bury's Victory Ground on Friday 31st July whilst the second will see the two sides go head to head at Sudbury next Saturday (1st August) in the EAPL South.