Decibels on supressed subsonic .308

[Andy]

I've searched for the past 30 minutes online trying to find someone that did decibel readings on suppressed subsonic .308 rounds with no luck.  I know it all depends on bolt action vs semi, ammo used, suppressor etc etc.  Just looking for an idea of average numbers, what I'll be running once my build and tax stamp are approved is a semi automatic 18" barrel, 200 grain subsonic round with an Omega 300.

Thanks!

[RedRiverII]

Plenty on Youtube

 

[Andy]

Link please? I couldn't find any for .308 subsonic suppressed.

[shooterrex]

https://www.full30.com/search/suppressed nation

[sketch]

 

[willbird]

The issue with DB readings is how they are taken. There is a specific instrument that should be used in a prescribed manner. And even on an indoor range with totally controlled conditions for the most part the data differs from day to day, probably small changes in humidity. 

[Andy]

Agreed willbird, I was just curious if anyone had actually used a decibel meter with suppressed .308 subsonic rounds (inside or outside).  It appears no one else has that information yet either, I'm not needing this information for a dissertation or anything I just like looking at numbers (very curious how it compares to a sub 300 BO figures).  My guess is that they should be about identical (same size round around: 200 grain, going the same speed).