I came across this video, thought it was pretty interesting - what to do if you need a slug but don't have one:
[video]http://www.ignatius-piazza-front-sight.com/2011/05/23/front-sights-monday-blog-got-slugs/[/video]
[video]http://www.ignatius-piazza-front-sight.com/2011/05/23/front-sights-monday-blog-got-slugs/[/video]