My Ruger SP101 357 magnum, and my Sig P250 in 357 sig. They are loud in the indoor range.
A guy next to me was shooting a Glock 20 with some handloads. That sucker was LOUD! It was actually distracting me while I was shooting. I finally leaned over while he was reloading and asked him what he was shooting over there.
Hk 45C, Hk VP9 9mm, Hk P30S 9mm, Walther PPS 9mm, Beretta 21A Bobcat, Ruger LCP .380, Ruger 22/45 LITE Cobalt, byq Spreewerke P38, Patriot Ordnance P415, Patriot Ordnance P308, Remington 870 Tactical Magpul, Swiss K31 7.5X55, BNZ 42 K98, Ruger 10/22 50th anniversary design contest rifle, Tikka T3 CTR