russelonsdale Posted June 9, 2012 Report Share Posted June 9, 2012 i have an m55 heavy barrel sporter in 223 rem itwll shoot ragged one hole groups at100 yds with 55grn winchesterfactory ammo will fitting amoderator effect this Link to comment Share on other sites More sharing options...
Foxshooter Posted June 9, 2012 Report Share Posted June 9, 2012 No, not if its threaded by someone competent Mark Link to comment Share on other sites More sharing options...
Tony.H Posted June 13, 2012 Report Share Posted June 13, 2012 it could alter, as putting a mod on it alters the harmonics of the barrel..... tony Link to comment Share on other sites More sharing options...
tackb Posted June 13, 2012 Report Share Posted June 13, 2012 Extremely unlikely , if anything it's likely to improve! Link to comment Share on other sites More sharing options...
Wapinschaw Posted June 13, 2012 Report Share Posted June 13, 2012 As pointed out by Tony, the weight of the moderator will change the barrel harmonics and the point of impact from the previous zero. Re-zero it with the moderator and you should be OK. My .243 Tikka 595 changes impact point by about 8" at 100 yards with the moderator on/off but group sizes don't change. It's well known that the weight of the moderator alters the barrel harmonics but apart from the centre of gravity effect, I think that there may also be an additional effect caused by reflex type moderators in contact with the barrel. Does anyone know what effect this may have? Link to comment Share on other sites More sharing options...
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