500grains,

The .375 Johannsen at Hallowell's is almost ideal and I've considered buying it, although for the price I am thinking I want a rifle with a stock built to fit my measurements.

Also of note, in case anyone is looking for a Johannsen in .416, GSI (as of about 3 days ago) still has a couple of Johannsens chambered in .416 Rigby and there are I believe two in .416 Rigby at Griffin & Howe in New York. I think GSI also still has one chambered in .458 Lott.

Richard