This is the project that brought me to this website, mainly because I expect to be shooting a good deal of cast in this gun, even though I will shoot some other stuff in it as well.
The idea is a straight walled .510 cartridge that headspaces off the case mouth. I will load mostly 50 bmg projectiles in it and from what I've seen there are quite a few molds ranging from heavy to insanely heavy that will be interesting in this thing.
The parent case is a 7mm blaser magnum, I know this is a strange choice but I have found cheap norma brass and I figure if I make a few hundred cases I will never shoot them all out.
The suppressor for this gun will be a bowers vers 50, which is currently just waiting for the alphabet boys to finish processing. The action is a savage110 and I got an oryx stock bc it is the cheapest chassis style I could find and I'd like something I can just drop the action in and be done with.
Right now I am in the process of making my dummy rounds up so I can get all the specs for the reamer and get it ordered. Then it will be the search for a suitable barrel blank as far as twist rate is concerned.
I'm thinking I will come up with a "light" cast bullet for it, just not sure what molds exactly. I feel like even subsonic the heavy stuff will wear on you after a few rounds.