I just picked up about 2500 450 BM cases, all matching Hornady and although I cannot confirm 100%, my supplier believes these are all once fired from test fires at Bushmaster. I think they look fabulous. I had a bunch of customers on my waiting list that I had to take care of first, but I have 743 of them left in stock. They are all polished with SS pins and look like new. Every customer was VERY pleased and all felt they were once fired, also.
They are $65 per 100.
Since I am new to this forum I will just share that I am a brass dealer - Big Dog Brass - out of Minnesota and have a huge customer base all of the country and every state except for Alaska! I stock about 160,000 cases of brass in 211 different calibers. I am still maintaining a 100% customer satisfaction rating after 4+ years of selling brass and am proud of that. If you are interested in these or any other caliber, just send me your email address and I will be happy to send you my entire list. If you are only interested in the 450 BM, great. I will need your zip code to figure out the best shipping option to save you the most money. I rarely use the flat rates, as they are a ripoff, and prefer to use the regional rate boxes so I can generally save my buyers $4-9 per box shipped.
I don't know if I am allowed to share my email address or not so I will let you folks tell me how to proceed. Everything I do is via my inventory list and emailing, plus some private reloading groups on Facebook.
I look forward to taking care of you!
Mark