[rec.guns] Which is louder: - 9mm or 45?

n9020351@unicorn.cc.wwu.edu (James D. Del Vecchio) (05/22/91)

  My next purchace will be a 9mm or a .45.  I've fired a 45, but never a 9mm.

  With some interest I've been looking at the Star M30 9mm, 4.3", 15rds
and the Springfield Armory 1911 .45, 5", 7 rds.
	(although I have fantasys of going into debt and getting an 
	Arminex Trifire .45 instead {deluxe 9rd 1911} or a CZ 75 9mm)
Of the two, which is louder?  I had assumed the .45 would always be louder,
but someone told me his hot loaded 38 super was much louder than either a
45 or a _10mm_!

If you can, rate these loads for volume, loudest to quietest.
			(say what bbl length please)

115 gr	1150 fps
124 gr	1110 fps
147 gr 	1000 fps in 9mm	
				vs
155 gr	1100 fps
185 gr	1000 fps
230 gr	850  fps in .45

---
could you also order these rounds for volume (from experience, not just
"common sense" please), loudest to quietest.
10mm, 45+p, 45, 40, 38 super+p, 38 super, 9mm+p, 9mm, 380, 38, 32 mag,
32, 22, 25. (specify bbl length or assume 5" for 10 & 45, 4" for the others.

avf@UCSD.EDU (Andy Funk) (05/22/91)

In article <34738@mimsy.umd.edu> n9020351@unicorn.cc.wwu.edu (James D. Del Vecchio) writes:
#
#  My next purchace will be a 9mm or a .45.  I've fired a 45, but never a 9mm.
#
(Stuff deleted)
#
#If you can, rate these loads for volume, loudest to quietest.
#			(say what bbl length please)
#
I've always thought that a one dimensional representation, e.g., decibels,
is an incomplete part of the story regarding the subjective "loudness" of a
shot. A more accurate representation would be a two dimensional graph of
decibels/time. Even better would be a three dimensional representation of
decibles/time/frequency.

I think my 1911 .45 is louder than my 9mm High Power, but it's more of a
whoomp than a crack.