The Super Colibri makes no noise at all. Just the sound of you pulling the trigger and dropping the hammer.OnTarget said:I need something no louder then an air rifle. something 550-675fps. When you say " it has a little crack to it " how loud is it?
What's the fps on that ammo?ricky9x22 said:there's also another subsonic out there, its SK subsonic. You can get it at Champion's Choice, at (615)793-4066, I have be shooting it at ARA 50 yard matches with very good results. Their part number is #420110, $6.00 per 100 and its a hollow point also. Very good results out of a bolt gun. Hope this helps! I'm shooting in the high .1's & low .2's at 50 yards with this ammo.