Alpha 30BR brass

[SeabeeKen]

Brunos says 2-4 months but can backorder

 

[AlNyhus]

For neck thickness, .012 would be a good number. Rounding the bullet diameter up to .3090, that would give a .333 dimension over the bullet pressure ring. Either a .335 or .336 neck reamer would be good 'no turn' fit. For the popular .330 and .331 neck diameter reamers, a .012 neck would let you do a nice light cut while still getting a full clean up (assuming the necks would be a consistent .012).

For case length, 1.500 would be the easy button to fit most 1.520-ish chamber lengths.

Personally, I'd take a longer neck length (1.540 or so) and then trim the neck length back to fit my individual chamber length for a true custom fit. Most don't actually measure chamber length, though...relying on the reamer print.

Good shootin' -Al

 

[Ccrider]

I think the neck thickness should be designed around the most popular reamer being used for the 30br——— a no turn for the Robinet reamer.

Rounding the bullet diameter up to .3090, a .010 neck would give a 328 finished round—adequate clearance for a 330 or 331 no turn.

The longer neck length would allow one to trim to desired length.

 

[RGRobinett]

I think the neck thickness should be designed around the most popular reamer being used for the 30br——— a no turn for the Robinet reamer.

Rounding the bullet diameter up to .3090, a .010 neck would give a 328 finished round—adequate clearance for a 330 or 331 no turn.

The longer neck length would allow one to trim to desired length.

Longer and thicker ARE "no brainer" attributes: brass and always be [easily] removed . . . somewhat difficult to, "put back". I'd specify that the body Dia. @ .200" ahead of the bolt-face DATUM not exceed 0.469'". RG

 

[jimmymac]

For neck thickness, .012 would be a good number. Rounding the bullet diameter up to .3090, that would give a .333 dimension over the bullet pressure ring. Either a .335 or .336 neck reamer would be good 'no turn' fit. For the popular .330 and .331 neck diameter reamers, a .012 neck would let you do a nice light cut while still getting a full clean up (assuming the necks would be a consistent .012).

For case length, 1.500 would be the easy button to fit most 1.520-ish chamber lengths.

Personally, I'd take a longer neck length (1.540 or so) and then trim the neck length back to fit my individual chamber length for a true custom fit. Most don't actually measure chamber length, though...relying on the reamer print.

Good shootin' -Al

1.540 would cover the bases nicely with my 1.530 chamber. Trimming is easy! Thickness as you specified would also be fine with my .330 neck. The max case OD of .469 at the .200 line that @RGRobinett suggested would also work good for my application.