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I have a Howa 1500 in .204" Ruger calibre which is factory threaded for a moderator, any idea on the thread?

I am also looking for a compact silencer for it to see if I can get away without having to use ear muffs in the field.

Any recomendations?

From what I've seen over the years, factory thread seems to vary based on barrel profile and calibre. If you put a vernier over the diameter of the thread what does it measure? Most seem to be 1/2 or 5/8 UNF.