I recently picked up a ruger no1 in 50-140 with a .510 bore. It was originally a 375 H&H. Built by a local smith some years ago. I have some brass and 40 more on the way. It came with some data and a large box of 580gr cast bullets.

I’m hoping that a few of you might have experience with this cartridge. I’m mostly interested in jacketed bullet loads.

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