Can the 7.62 x 39 be made reliably subsonic with very heavy bullets and lower charges. I know there are som very heavy 308 bullets. Can they reshaped to work inthe 7.62 x 39. Would excess space in the case from a low power charge affect accuracy. Are tyhere any powders that would fill the case, but still result in velocities from an 16"-18" of less than 1100 fps.
Thanks
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