I am in the process of returning to casting my own bullets after an involuntary hiatus due to a disabling accident. For Magnum loads, I cast my own gas check SWC bullets for 357 and 41. I am finding that copper 0.410" gas checks are becoming scarce, and 357 gas checks gave me sticker shock [the last box of gas checks that I purchased cost about $11!]

I am now seeing aluminum gas checks are being sold, along with a device similar to the black powder afficiandos tap-a-cap. For those of you that cast and load gas check bullets, what has been your experience with aluminum gas checks?

Thanks!

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