how much will a 6 inch barrel shroud affect the noise?

[markasaurus]

I have a 1322, with a 12 inch barrel.  How much will a plain six inch barrel shroud effect the noise of firing?  Would the results be different indoors vs. outdoors?

[1377x]

yes there would be a difference
have shot the gun outside then inside without a shroud?
try it you'll hear the difference
open space vs confined space