Almost all people on the aggressor end of a home invasion know the sound of chambering a shell into the barrel of a shotgun. It’s often enough to strike fear and submission into them. It can be the only sound necessary, and may often be better than an actual discharge.
Have a lot of experience with meth users, do you?
"That sound" is perfect for disclosing your location. "No sound" is what you want, so your supersonic shot column ends the threat before the "boom" gets to him.