Some people claim that they can reliably put twist-offs back on bottles successfully. I have enough trouble doing just one, that I hate the thought of 65 (6 US gallon batch).
Regardless of the above, I do not feel that you will get a tight fit reusing screw-off caps. The caps are inexpensive, and it's not worth taking the chance of your beer spoiling.
Most beer makers prefer non-twist-off bottles. Most of the US twist-off bottles are made of thinner glass, and are much more prone to breakage. The standard Canadian beer bottles are designed for re-use by the breweries, and thus are made of thicker glass. Many Canadian (and some US) beer makers use these. Personally I have collected a good supply of crown cap bottles, so don't need to use screw caps anymore.
The best bottles are dark brown. Clear and green bottles should be stored out of the light. I find the boxes that printer paper come in to be excellent for storing beer bottles.
Grolsch or EZ-Cap beer bottles also work excellently, and have the added benefits of being larger (473 ml) and not needing bottle caps. I use a lot of 650ml crown cap brown bottles. In previous years, we found them easily in Saskatchewan, BC, Washington, and Oregon. Used to buy different microbrew to try in this size bottle. Haven't found a source in Ontario or New York (Buffalo/Rochester area), but haven't been looking too hard.
Steve