Yup--I was actually thinking along the same lines. I have tons of base metal to alloy with, so I might cook up a batch of 20-1 and see what happens. A change in pin design is also in the plan. The interesting thing is that this alloy is exactly what I use in my 165gr. .40S&W HP/SWC at more than 100fps faster and it gives me perfect expansion every time. The size of the cavity is the part that jumps out as the issue--next one will be a straight-tapered cone, no radius, and smaller diameter for a thicker wall.
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"Why is is called Common Sense when it seems so few actually possess it?"
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