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My concern is that you are altering the structure and function of the cartridge head. Cartridge design is done by professionals based on science. Primer pockets are part of this. Berdan primed cases are designed with an integral anvil and multiple small/tiny holes. Boxer primed are designed to support a deeper single hole primer with its own anvil. Conversion was not a design consideration. You are assuming drilling a bigger hole is all good. I would not. Operating pressures are over 30k psi. If something fails, it is game over. Why would you want to?
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