Reloading 500 s&w copper bullets

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Aannddrreeww

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Does anyone reload the 400 grain wide flat nose copper bullets from Lehigh? If so, do you think the copper bullets being longer than 400 gr. Lead bullets presents a significant rise in pressure?
 
Case volume is just one of several factors that is different with solid copper versus lead-core bullets. Resistance to the bore/rifling is often dramatically different and further raises pressures. You cannot simply use lead data.
 
I would be perfectly happy using hardcast, but now we have to use lead free bullets to hunt in California. Can't wait leave this hell hole.
 
I was just comparing these Lehigh bullets to some 400 gr. Jacketed bullets I have lying around. If I seat the bullets on the lower of the two crimp grooves, the copper bullet will actually leave a little more case capacity than the jacketed bullet so I don't think pressure will be an issue.
As far as increased bearing surface, the copper bullets have two driving bands which seem to have less bearing surface than the comparable jacketed bullets.
 
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