Just a little geek lesson here......
SVG (Salable Vector Graphics)
http://en.wikipedia.org/wiki/Scalable_Vector_Graphics isn't really so much an image as it is a series of mathematical co-ordinates between points with each one relating to the other to form the "image".
(Think of a wire-mesh map on a 3D model, for instance since each point to another point is a mathematical equation.) Anyway, with a traditional image such as JPEG, you can change the resolution down from a higher resolution (such as 600 dpi) to 300dpi, but you can't go the other way (300 dpi to 600dpi). Yes, technically you can do it, but where will those extra pixels come from? Likewise, you cannot really take an image that is one size and enlarge it without pixelation, regardless of the dpi. The rule of thumb is going down is fine, going up is not. In both cases, pixelation will occur.
If your file was created and saved as an SVG
(No, saving a JPEG into the SVG file format will not make it a true SVG), then you can make it any size you want without pixelation. In my opinion, DVG is the ideal file format for targets since you can make them any size you want. Most of the big targets you purchase are 25" x 38". Making your own (
provided you have a printer that can do that size) is easy enough to do. Since the SVG files in the zip are original SVG files, it's all good.
These files would be great to use if a club or group of people wanted to do a large purchase of them all at once. Any print shop should be able to do it for you. I recommend printing on a matte finished card stock or thicker paper.