Dude, you’ve put 1000 rounds through the thing and haven’t cleaned it! Man I absolutely cherish my suppressor. When I brought home my vortex 2, I cleaned it as per the instructions before I even fired the first shot. Whenever the suppressor is going to sit for any length of time more than a couple days it does so in a 1 inch tube of PVC pipe filled with WD-40.
.22 are so dirty, yours is probably packed with un-burnt powder. Here’s what I want you to do: Go to Home Depot and buy a half gallon jug of WD-40. Get yourself a clear glass jar deep enough for the suppressor. If you use a plastic jar is will start to lose its shape. WD-40 doesn’t seem to have any affect on PVC (which isn’t a plastic BTW). Put the suppressor into the jar and pour in the WD-40. Swish the suppressor up and down a couple times to make sure there are no trapped air bubbles. The suppressor will probably drink up a little so you will have to add more. Make sure the suppressor is completely submerged and let it sit there for a couple days. Just guessing here but you will probably have an inch or two of powder residue that will settle on the bottom after a couple days. At this point remove the suppressor and put it into a clean jar, with fresh oil. Take the old oil to Discount Auto Parts and dump it in their used motor oil tank.
Don’t worry about blowing out the oil with an air compressor. Just screw it on and fire it. It will dry out after about 20 or so shots.
If you really want to make it quiet add some water (distilled water please) shake it up and dump out the excess (or not).
BTW: The quietest bulk pack ammo is the Remington 36 grain bulk pack stuff. The Remington subsonic are (at least in a pistol) no quieter. The CCI sub-sonics are well worth the extra cost however, as they are RELLY quiet. The Aquila subsonics however is are favorites since it is a 40 grain solid projectile. I don’t want a hollow point in any caliber, but epically not in a .22. The Aquila doesn’t seem any louder that the CCI, but if I had to give an edge to one it would be the CCI. Whatever you do don’t try the 60 grain, it wont stabilize in the gun and will tear up all the internals of your suppressor.
Dan