Penarth continue to lead the way in the Admiral League in the East Central region, after a battling 39-31 win over St Albans.
Blustery conditions at the Athletic Ground played their part as the Bears saw off a well-drilled Buns side to retain their 100% record in all competition, with Harry Williams scoring a hattrick of tries.
Spencer Robinson, Ben Jones and Joe Williams also went over for the hosts, who also marked the 100th club appearances of front row duo Geraint Williams and Tom Griffiths.
Penarth remain top, having yet to drop even a single bonus point in the Division One table.
The game was called off early with 14 minutes left after Barry no. 8 Rhys Carre suffered a potentially serious neck injury - another setback for the Bombers, who have already been hamstrung by a number of long-term absentees, including captain Aled Rees.
Next up for Barry is a home clash with Cambrian Welfare at the Reservoir Field next Saturday.
In Division Two, Cowbridge made it back-to-back wins after beating Pentyrch 29-22, while Llantwit Major are off the mark in Division Three after a hard fought 33-24 victory at home to Ferndale.
Dinas Powys were beaten 26-15 at home to Cilfynydd and in Division Six, Sully Sports were beaten 40-13 at Bridgend Athletic in their first defeat under new head coach John Dimond.
Old Penarthians' Division Five fixture at Tref y Clawdd was postponed.
Next Saturday - Admiral National League
Division One East Central
Abercwmboi v Penarth
Barry v Cambrian Welfare
Division Two East Central
Cowbridge v Cymry Caerdydd
Division Three East Central
Dinas Powys v Pengyraig
Gilfach Goch v Llantwit Major
Division Five East Central
Old Penarthians v Brecon Athletic
Division Six East Central
Sully Sports v Kenfig Hill Athletic
Elsewhere, Louis Rees Zammit suffered a toe injury in Bristol Bears' comprehensive 50-17 defeat against Saracens in the Gallagher Prem on Saturday.
The Penarth-born wing had to be helped off the field early in the second half, although head coach Pat Lam remained confident the summer signing would return for next Saturday's clash with Exeter Chiefs at Ashton Gate.
Rees-Zammit celebrated his return to top-flight rugby last weekend by scoring a last-minute try in Bristol's opening 42-24 victory over Leicester Tigers.
Barry and Llanelli Warriors entertain in friendly
Barry Ladies bounce back against Aber
Rees-Zammit scores in Wales' last-gasp win
Barry game postponed over travel concerns
Llantwit game rained off
Rees Zammit starts in crucial Japan test
Bevan named player of the month
Barry visit Cambrian United in MG Cup semis
Barry Town to unveil new club strategy
Bombers improve against the Buns
Barry Ladies reach Trophy last eight
All square again for Barry
Rees-Zammit on bench for Wales return
Llantwit up for Cymru South awards
Barry through to MG Cup semi finals
Young Bombers rally with Llandaff win
