In 1924 the British Government decided to approach the Confederate State Department with a proposal of mutual R&D for the sake of both nations mutual defense. During 1926 Lord Admiral Sir Nigel Thorpe Danekirk of the Royal navy introduced a terrifying idea to the R&D department of the R.E.Lee Munitions Company. This concept was to take surplus 60mm repeating naval cannons massive ammunition and cut it short, extremely short. Having cut the shell three quarters down lengthwise, leaving it at an approximate size similar to the 40mm cartridge many are familiar with from our own timeline.
Around 1926 the R&D team had finally developed a fully functional variant of the "Quartered 60mm" shell. The Research team's many sleepless nights had produced a unique way to have striated rows of the CSA's standard munition, but no casing included, loaded into the gaping maw of the shell. As such, the .303 British rounds needed modification. The first modification involved giving them a self-rifled fin-set. The second was to remove this dandy round from it's casing and give it a Jacketed Hollow Point tip. Simply put, the Q60 Munition as it has been labeled holds three striated rows of Self-rifled/fin-guided jacketed hollow-point tipped rounds.
Now that the terrifying munition has been perfected, it was time for the delivery system to be developed. As such the R.E.Lee Munitions Company R&D team decided to open correspondence with the "Royal House Armories" in the British Isles. With a bit of cooperative engineering under the programs belt the actual weapon was completed. In 1928 an almost Bren like man portable cannon was released for use to the Confederate Armed forces. The weapons bolt mechanism is opened by inserting a massive magazine of four of the Q60 Shells.
After inserting the gravity fed magazine the charging handle clicks forward, courtesy of the mag-pressure-actuated lever release mechanism. If the magazine system were to be damaged in the field, the feed-rail for the hopper can be removed and a single round can be loaded via slamming the bronze stud in front of the charging lever. Many confederate troops adore this weapon, some just flat out saw short the already smooth-bore barrel removing the sights, which, let us be rather frank, exist solely for the purpose of knowing which direction the operator is pointing and simply use hand-made bandoleers holding as many of the two pound Q60mm shells as they can still walk with. As an added bonus, many Confederate Soldiers have given it the nickname "Big Ben" purely because it was developed with British assistance.
So as to surmise the R.E.Lee Munitions-Co M28 'Big Ben' Scattercannon it is a truly devastating weapon, the casualty counts caused by it's use are mildly reminiscent of a fragmentation grenade going off. It's sheer weight of twenty-four pounds is enough to make many soldiers quiver in their boots, but incredibly the "Dixie" fighting spirit is strong enough for the CSA to not just mass produce these, but actually receive donations from it's armed forces for continued production, the infantry are actually donating to pay for it's production.
A very productive member of the British Empires arms manufacturing industry has produced a less "dixified" variant of weapon for employing this cartridge, take a gander at his design: [link]