Might be easier to just get one of these
locally at Rainier Arms.
Since I read your post and assume that the bolt you want to use is unavailable in HC finish...
Try these guys. We have not personally used them, but they were reccomended to us a while back for a project. By the looks of the pricing they are VERY affordable. Hope this helps and if you do use them let me know how they do.http://www.techplate.com/firearms_pl.htm