>>23384428>Beam magnum is maybe a miniaturized version of the FAZZ hyper mega cannonThe Beam Magnum is definitely not that strong, at least according to databooks. Sources range from having 4x the output of a normal rifle to the output of a mega launcher or mega bazooka launcher. It's unclear what this means exactly since the mega launcher, hyper mega launcher, and mega bazooka launcher are all part of a single class of high-power beam cannons called mega launchers. They appear to be some sort of advanced version of beam bazookas with a seemingly variable range of output. So I guess the Beam Magnum, and the The O's rifle, would probably also fall into that category.
The Zeta's Hyper Mega Launcher only clocks in at around 8MW, but it's noted to be weaker than the Hyaku-Shiki's Mega Bazooka Launcher, in exchange for better power efficiency and higher rate of fire. Given the 4x output of normal rifles claim and the comparison to the Mega Bazooka Launcher/Mega Launchers, the Beam Magnum probably clocks in somewhere between 8-20MW in output.
The Hyper Mega Cannon is 80MW.