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Wonder if a pure copper bullet would become a self forging fragment at those speeds, similar to what is used in area wide anti armor munitions. It would be interesting to see the effect on 1/4 inch steel plate.SOC wrote: The hardest part to get right is the shoe that the sabot (.224 boolet, 1 in long 1/4 in dia pointed tungsten sheer pin... etc) rides in.
Most are plastic, and between powder gasses and bore friction as you go 3500 to over 4000 fps is pretty brutal.
A copper gas check on the base of a plastic shoe would help.
www.eabco.com/remington-accelerator-sabots.html
www.sabotreloadingpro.com/product/15222150
A 55gn bullet from a 308 could do about 3800fps and up.
I wonder what a 62gn green tip AP would do from my 300 SAUM... I think at 4500fps the bullet starts to burn up in the atmosphere... Wonder if the copper jacket would act as a sacrificial (heat shield) and protect the steel core...
I bet it would look pretty neat on high speed film... Especially hitting something...
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