What is the benefit of using the 7.62x39 brass as a base vs the 308 and necking to .277 or for that matter using the 22-250 or 250 and necking up to .277 and then going AI?
My 250AI is a nice lil round with power in a small package. I would bet a .277 version would be nice.
I have not heard of either of those you mention, but I am sure someone has tried it somewhere.
I guess I am just curious why the 7.62x39 as a parent brass.
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