bizymoucha,
I have zero inside knowledge here, but Mr. Jamison got his first patent in '98, while Winchester introduced the .300 WSM in 2000. At that time I thought Winchester were being toads for claiming that it was an entirely new case and design when several wildcatters and proprietary case designs were out there in the public domain.
In particular Jim Busha's Heavy Express Magnum and HE Short Action Mags were being advertised in the Wolfe magazines.
jim
