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Years ago, working through e-mails with Rod H. of Idaho, we came to the conclusion the 9.3x57, in a model 98, should be able to just about duplicate the 1930's 9.3x62 data, ie: 286gr. at 2,340fps.

At that time, in my M46 Husky with the model 96-type bolt and metal, I was running 2,550fps with 225gr. re-sized .375's, 2,450fps with 232gr. Norma Vulcans, along with 2,300fps with 270gr. Speers, 2,200fps with 286gr. Norma and PriviPartisan bullets. The resized 300gr. Hornady I was pushing out at 2,170fps, which virtually duplicates or exceeds the early 9.3x62 data of a 285 soft and solid at 2,175fps.

I have some old style Barnes 250gr. Spitzers I should load and try in my bro's rifle. I suspect they will easily make 2,400fps.

All of these loads generated less than .0005" (1/2 thou) expansion of the web from FL sized cases.

Extraction, as expected from what were seemingly low to low moderate pressures, was effortless, as was re-sizing due to the slight case expansion.

It's a hell of a round, actually and deserving of modern ballistics in modern actions.

Norma is the only producer of factory ammo, I think, and their loads of 285gr. at 2,050fps produce 44,000PSI Pezio, 38,000CUP.

The same weakest action barreled and chambered for the 9.3x57, is also barreled and chambered for the 6.5x55 Swede at 55,000PSI, the 7x57 Mauser, 8x57 Mauser and 9.3x63 Mauser, all running 57,000PSI CIP maximums.

So - there is some room to work with here as well as perhaps even more wiggle room in a model 98 Mauser action.

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Daryl

"a gun without hammers is like a Spaniel without ears" King George V

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