Cabelas has that #1 in a 50 year commerative limited edition. It is simply not a big seller.
It is the slowest of the big 300 magnums IIRC, and a good 30-06 near matches performance.
That said, I'd still like one, and I already have good 30-06, 300 WIN MAG, and 30/378 WBY
rifles in the safe.