WARNING!!
Do NOT use Bud or Bud Light bottles... Several years ago we bottled in twist-offs for a few years (middle of nowhere, pry-offs were hard to find, poor, etc.) and if you have the right capper it works just fine. Had 1, or maybe 2 bad bottles the entire time (probably due to sanitary conditions... they weren't exactly flat).
However, I believe it was the Bud bottles (just maybe Coors) that cracked or shattered on almost every capping! Dangerous. The neck is just too weak. If you hold it up to the light (empty w/o label) it was more of a golden-brown than brown, and had 2 really poor molding seam lines on the sides. Whichever it is, don't use that one -- I doubt they've changed.
But every other twist-off worked great with our cheap wing (not the spendy one, oddly) bottle capper by capping firmly, rotating 90° and pressing again.
Good luck! (But I'd recommend using the money you saved to buy these (post #6):
http://forums.moreflavor.com/viewtopic.php?p=181641&sid=b38167f45c69e5ca563d4802c878c300
$42 for 20 really nice, thick 33oz swing-top bottles from koch-usa. I have one of their growlers and it is nice and tough. If they ever wear out, new rubber gaskets are basically free. You'll have to put in with some friends, though as the shipping ain't cheap and it's $150 minimum.
Just don't try to cap the ones described above, seriously. My friend almost had a shiv of broken glass through his wrist from one shearing open whilst capping. Not worth it.