I'm about to modify an existing suppressor from .224 to .243 by simply running a long drill bit down the guts. I'll be doing it in the lathe and ensuring minimal run out. How much projectile clearance should there be? Currently the .224 projectile travels down a 7.5mm hole, so what size hole should a .243 projectile have?
Those with a 6mm type suppressor, could you please let me know your hole size?
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