Canada cut the funding for the project in 1967 and an embittered Bull returned to his Quebec range, having managed to get the project's assets transferred to his own company - Space Research Corporation (SRC). With SRC, Bull set himself up as an international artillery consultant. Incorporated in both Quebec and Vermont, a number of contracts from both the Canadian and US military research arms helped the company get started.
An early success for SRC was the sale of 30,000 artillery shells, gun barrels, and plans for an advanced 155 mm howitzer to Armscor of Pretoria - a deal suggested by CIA personnel, and shipped with the aid of an Israeli company, Israeli Military Industries. The artillery was vital to a war South Africa prosecuted with Angola.
At this point Bull was arrested for illegal arms dealing with South Africa, in violation of the UN arms embargo after the administration in the US changed. He spent six months in a US jail in 1980. On his return to Quebec he was sued and fined in the amount of $55,000 for arms dealing. It was at around this time that Bull began developing the G5 howitzer (the predecessor of Project Babylon) under an Armscor contract. Gerald Bull lived a few years in Saint-Bruno-de-Montarville, Quebec.
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Now even more embittered, he left Canada and moved to Brussels, where a subsidiary of SRC called European Poudreries Réunies de Belgique was based. He soon secured work with the Chinese, and then Iraq. He designed two artillery pieces for the Iraqis: the 210 mm Al Fao; and the 155 mm Majnoonan, an updated version of the G2. The guns were built and sold through Austria.
Bull then convinced the Iraqis that they would never be a real power without the capability for space launches. He offered to build a cannon capable of such launches, basically an even larger version of the original HARP design. Saddam Hussein was interested, and work started on "Project Babylon".
A smaller 45 meters, 350 mm caliber gun was completed for testing purposes, and Bull then started work on the "real" PC-2 machine, a gun that was 150 meters long, weighed 2100 tonnes, with a bore of one meter (39 inches). It was to be capable of placing a 2000 kilogram projectile into orbit. The Iraqis then told Bull they would only go ahead with the project if he would also help with development of their longer ranged Scud-based missile project. Bull, never sensitive to politics, agreed. Nominally, Britain did not support Iraq's armament programs, but as a matter of fact, British assistance in the Scud program was considerable, shipping vital missile components.
Construction of the individual sections of the new gun started in England at Sheffield Forgemasters and Matrix Churchill as well as in Spain, the Netherlands, and Switzerland.