Ok, big big update. Today I spoke with the engineer for Lehigh defense. If you look way back on this thread, you will see I have been trying to get a slug made by them for some time. Well, it's happening. Things have changed a little from the original plan. To recap, the original plan was for a 600 gr, all copper Xtreme defender. The slug that will be made is a 725gr, full brass Xtreme Penetrator (possibly with a hollow base). The reason being, at this weight and diameter, it has a pretty low SD. The XP design should help it penetrate deeper. The brass will also not deform as easily as the copper would and will be cheaper. The engineer did put to rest my concerns for excessive wear on the rifling. After these details were taken care of, the conversation turned to how we are going to handle the sale of the slugs. Lehigh is not used to random guys wanting something like this. They deal with ammunition manufacturers that plan in marketing their bullets. So this left us confused on how to approach this issue. I could have Lehigh sell this slug to me only. This allows me to market the bullet as my own amd sell to whomever I wanted. If you want bullets, you gotta go through me. Now, with the slugs being so expensive, and me having 3 kids and a full time job, I don't have the time, money, or resources to do something like that. So instead, I told Lehigh that slugs could be made available to anyone who wants them. So, if you want a 725gr 12 gauge slug from Lehigh defense, you can give them a call and get some for yourself. I do not know how they will do at standard velocities, but if you wanted to try, you can. Now, there will likely be a minimum of 1000 slugs to be able to order. So a group buy would be the best way to get your hands on them without having to drop a serious amount of cash. A lot of people have been following this project, and a lot of people have been a big help. It would be a great disservice to the cartridge, and to anyone who is interested in this if I selfishly made this slug exclusive only to me. Prices for the slug are not determined yet, I should have a quote by Friday. Once I get info, I will pass it along.