The .451 Detonics Magnum was a powerful, custom cartridge developed by Detonics in the early 1980s, aiming to significantly increase the .45 ACP's performance. It utilized thicker .45 Winchester Magnum brass, cut down, to handle much higher pressures, achieving a 30% velocity increase. Detonics pistols like the Scoremaster were modified with dual recoil springs and buffers to manage this power. Despite its technical success, the cartridge failed commercially due to a lack of factory ammunition, paving the way for successors like the .45 Super and .460 Rowland.
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