Hey Stan,
In case you were curious, I measured some new Nosler brass, rim diameter .524", rim thickness .054", head diameter .464", length 2.93".
I had a similar thought as what you're thinking, but other little projects, happen. If you aren't in a rush, monitor the Nosler website, it seems they just had a sale that puts the cost of their brass, at about what you're considering with the Privi brand. I never loaded any, but I recall figuring out that a 41 mag seating die would put enough of a crimp to hold an overshot card. I was going to try filling the bullet seating cup with epoxy, so it would be more or less flat.
I may have read it wrong, but you mentioned opening up the primer pockets? Why not just use large rifle primers? Anyway, best of luck with the project.
| 