Plenty sporter 30 cal rifles are fitted with ~16.5mm muzzle diameter and use M14x1 muzzle thread but recently I am sure Sako are using M15x1 even up to 9.3x62. They seem to be happy with the small shoulder. I had an expert rifle smith fit a Suppressor using M16x1 on a 16.5mm Lothar Walther barrel. (he was an electrician by trade) even though there is only 0.5mm shoulder the supperssor and 308 rifle are working fantastic since more than twelve years. Only ever shot with suppressor. M15x1 should be ok.
Agreed, outside of the USA I'd say M14x1 or M15x1 is the most common thread for sporter weight barrels.
9/16x24 is about 14.3mm and is what I'd go for.
Tikka started offering the D18 profile that can take a 5/8x24 thread, but for standard lite profile need to go a bit smaller than that.
I can extend it up and to the left to give me the best indication what the wind is doing. It's got a little wind flag attached to a string at the end of the string.
Why we have it is we shoot at small kill zones and wind blows pellets a lot. Getting the wind wrong means missing a bunch.
