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View Full Version : Lyman #57730 With Straight Base Cavity



hobbler
09-30-2023, 07:39 AM
Years ago I'd come across a Lyman #57730 minie mold with an after market alternative base plug design, made to provide a straight cylindrical cavity in the base of bullets rather than tapered. And, a small spherical section button at the forward end of the cavity. Anyone here familiar with that design? Were they perhaps intended for loading with a expander plug?

hobbler
09-30-2023, 07:41 AM
Just came across this thread.
Forgot I'd posted it two years ago.
https://www.n-ssa.net/vbforum/showthread.php/19155-The-Lyman-55730-Base-Cavity-Shapes