I have been using the foster type slugs for as long as i can remember. I have,over the years, found that each shotgun seems to like 1 brand over another.Some like WW, some like rem sluggers, some like federal ect.... you just have to try the different brands to see which shoots best in your particular gun.So I will be using remingtons in my pump,and WW in my shortie double, and I have to find out what my new tracker 1 20 ga. will like best.I have never lost a deer after it was hit with one of the foster slugs, but all my shots were 75 yds or less....most were much less.