As others have said, I doubt that expansion will take place on a solid cast bullet with either method. So it really depends on how they shoot in your gun at the speeds you want them to. If you don't get any leading with the air cooled bullets then you're good to go with either method. I personally water quench my bullets for the .44 becasue they work better for me than air cooled, but that's just me and my gun. Good luck with your hunt.

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Have .44, will travel