Title says it all. I can't seem to find any info on this on the interwebs.
Title says it all. I can't seem to find any info on this on the interwebs.
All things considered they're going to be roughly equal. The .300BLK may have slightly less port pop due to lower chamber pressure but sonic crack is going to be about the same and the actual report from the muzzle will depend on the suppressor more than anything else. It's not fair to compare the two directly in terms of muzzle readings because you can't use the same suppressor to test both without using a .30 cal can for the 5.56 which will naturally put the 5.56 at a disadvantage because the can is overbored for that round.
My SBR 5.56 is much louder (to my ears) than my SBR 300blk, both through an AAC 762-SDN-6.
Supersonic 300 blk = 162 dBQuote:
Originally Posted by vaglocker
Supersonic 5.56 suppressed = 130 dB
Those numbers are very arbitrary and I'm pretty sure the OP was asking "if both are suppressed, which is louder?" if I'm reading between the lines correctly.Quote:
Originally Posted by Renegade
Agreed, but the question was pretty open ended.Quote:
Originally Posted by 0uTkAsT
Measured where? What gun/BBL? What ammo? What silencer?
Ditto.Quote:
Originally Posted by IraqVet1982
My 300 BLK has an 8.2" barrel and it's still nicer on the ears than my 16" 5.56 with both suppressed.
I agree. 5.56 sounds louder to my ears than 300Blk supersonic. Both suppressed and not.
All things equal, shouldn’t the slower bullet be louder(the sonic boom), assuming supersonic?
For the shooter port noise is going to be the major factor.