hello, I am in the market for a pistol caliber carbine of some sort, and I am curious about the noise levels of various calibers. I have a m1892 clone in .38/.357 and with 38 specials its no louder than a .22magnum, and if I'm in a hurry,(varmint) I don't regret shooting it without hearing protection. I love the gun (and low noise) but I am looking for something with a detatchable magazine so on the fourwheeler and in the truck it won't be loaded, but its fast to do so. I also need it to be able to shoot cast bullets (sorry Marlin camp guns) I am looking at the Ruger PC9 and PC40, mabe even a AR in 9mm or .45acp, I might even try a Hi-point,1911/glock conversion or repo Thompson. I know that load, speed, barrel legnth, etc are all variable, but what is your experience with noise levels of 9mm,40,45acp out of a carbine?