Quote Originally Posted by McTrucky View Post
.... So big is better. And the volume increases far more by increasing the diameter, than increasing the length, for all but the shortest of cylinders. So generally, fat beats thin.
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My experience from experimenting with .22 rimfire silencers and making up different baffles and tubes, is that when you reach about 30mm diameter there is not much more to gain with a diameter increase. Baffle construction and length in front of the muzzle is more important than tube diameter when you are past 30mm.