If you want some good looking bullet holes, you can download my free set on Turbosquid. You get 4 for regular surfaces, and 4 for glass. They're at a fairly hi-res, in case you need it, but you'll probably want to scale them down a bit.

http://www.turbosquid.com/FullPreview/Index.cfm/ID/473116



If you get them, please leave a review.