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Old 10-10-2009, 02:32 PM
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500 Magnum Nut 500 Magnum Nut is offline
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One thing you didn't measure is the length of the cartridge. The 357 has an .100 longer cartridge body that will help spread the forces over a wider area of the cylinder.
Another point is the weight of the bullet. A 158 grain bullet will strike the forcing cone lighter than a 240 grain bullet under the same velocity.

Will it stand up to near magnum power levels?

I'd think it will, after all S&W has proof tested the guns to have at least a 50% safe margin before the top strap flies off.

Personally, I'd test it out on a -2 gun just to make sure. I'd hate to ruin a collector piece.
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Last edited by 500 Magnum Nut; 10-10-2009 at 02:38 PM.
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