I had contacted Jamison International about the Newton cases. They have specs on file, and the case head diameter is the same as the 500 S&W. I never had enough people interested to do a run. You can make Newton cases from 8x68 cases, but it's a lot of work.

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Rocky Mtn. can make you some lathe turned cases. I don't know if such cases can take .30 Newton pressures, but they do offer .35 Winchester. Looks like the price would be about $3 per case. Brass for the .22 Savage is available commercially, Norma I think.

I had someone that was willing to run the newton case. I forget how many they wanted to run, it was only 5k or so.

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