Have you added Root Kill to any lead? What has been your experience?
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From a giant sticky with lots of deleted posts, what I chose to pursue was post #499: https://castboolits.gunloads.com/sho...=1#post3790727
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I am using 0.4 oz Root Kill per lb of wheel weights lead I have (50:50 mix of SOWW & COWW). Melt temperature afterwards is 565F. The main benefit I’m seeing is that the lead seems to be cleaner, and I get good fill out without adding tin (Keith style 255 grain SWC for .45 Colt, with square lube grooves.). I am casting for pistols between .45 Colt and .357 Mag. I have only loaded this lead into .45 Colt and will work up to the stronger calibers as I confirm no leading. I look forward to testing expansion & barrel leading with .357 hollow points. If I get good results there I’ll send some to BNE for XRF testing to confirm there really is some Cu in there. Probably will have BNE look at the lead before and after the Root Kill fluxing, to see what all I am removing.
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One thing I do different from Popper is that I mix the Root Kill into the lead as it cools into a slush. I let the near homogenous mixture cool to room temperature, then reheat later. This results in a chunk of slag on top of the lead that could be described as a cake. I haven’t looked far enough into the result to know if this is a waste of time… I hope it is.
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This wheel weights lead is definitely dirtier than purchased alloy. When I think to myself about what I am doing, I say “I am fluxing with Copper Sulfate to 1) remove contaminants, 2) add some copper, and 3) prevent the need for tin.”