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Since i´ve been using moderators for all my rifles for a number of years now i can contribute with some info here. Like already said any and all attachments onto the barrel will change its harmonics. A moderator acts like a barrel weight/tuner and so the POI Changes some. The heavier the barrel the less effect but the effect will Always be there, nevertheless.
In most cases a mod actually (a well made one ) makes a rifle shoot tighter Groups since it lessens the felt recoil and the turbulence behind the bullet when it exits the mod is all but eliminated.
A badly made mod OR barrel threading can/will make the bullet clip the baffles on its way out and that will mess with the accuracy – big time.There´s nothing wrong with the OP´s mod. My wild quess is it´s a std/”spaghetti” barreled model so the POI moves downwards quite a lot. Perfectly normal 😉
Several manufacturers in Europe have “lightweight” model mods too. Those will have less “drooping” effect.
http://www.a-tec.no/carbon
