No you didn't. It is impossible to put that much power into ANY 410, let alone a Behringer.
I dunno about that man, the Uber 410 by Genz Benz is rated at 1000W (with the tweeter fully on), but will happily run at 900W with just the four ten-inch speakers from what the specs (and a couple of video reviews) say. I haven't tried one myself, but Ed Friedland reviewed it with the Shuttle 9.0 (which is 900 watts) and he seemed to think that the pair was great.
That said, there is NO way that a Behringer 410 can take 1200 watts for any period of time, let alone continuously. Behringer make cheap products, some of which ARE quite good (I used to be in a band that had one of their mixers/power amps, and it worked fine), but on the whole their stuff is cheap and rubbish. Their plastic pedals break after a couple of months, their amps will always die within a year without fail, and I strongly doubt that their speaker cabinets are any better. You wouldn't be able to find any 410 that could continuously take 1200 watts at this point in time IMO.
I remember the first time I bought a non-practice amp: I bought the most powerful amplifier I could afford. What I should have done was buy the most carry-able amp I could afford, with thoughtfully ranged EQ. admittedly you need to meet the stage volume of your drummer. but beyond that what is the power for?
Back to my first question what do you think you want those watts for?
Well, you might not NEED the power most of the time, but one of the reasons I love my Shuttle 9.0 is that it's as "carry-able" as a book with knobs on it (almost literally), AND it's loud and powerful. Having portability with an amp is definitely a big issue in today's world, with fewer venues supplying gear and people expecting musicians to be more efficient with gear management, but having headroom and extra power on tap is something that WILL come in handy in a band eventually.
Having only enough power to match your drummer's volume will be fine during rehearsals, but at gigs you ought to have extra power because you never know what the room's acoustics will do. Some rooms will make drums sound louder or quieter than usual, same with bass, and while the differences aren't big it helps to have that extra padding there so you don't have to play entire gigs with your amp running in the red. You can't always count on full PA support either, so you need to be comfortably able to match the drummer's volume with headroom IMO.