http://www.dakkadakka.com/dakkaforum/posts/list/8.page JForum - http://www.jforum.net GW site has a pack for sale listed at 28.5mm, but the Howling Banshee box says 28.35mm. And is that the bottom diameter or the top?]]> http://www.dakkadakka.com/dakkaforum/posts/preList/793233/10963369.page http://www.dakkadakka.com/dakkaforum/posts/preList/793233/10963369.page GMT mm in my experience. ]]> http://www.dakkadakka.com/dakkaforum/posts/preList/793233/10963397.page http://www.dakkadakka.com/dakkaforum/posts/preList/793233/10963397.page GMT