I got my Tac-65 today. About 35 days mailbox to mailbox. LLC route went smooth as silk. It was extremely easy.
There is some first-round pop, but if you spit in the back of it a little before shooting, it is extremely quiet. This is the first can I've ever heard firsthand, and it is really impressive. It is quieter than my Crosman spring piston airgun. I am using a P-22. I started with Mini-Mags, but they occasionally would break the sound barrier. Federal bulk works great and is quiet.
It is very light. You can still use the sights, but probably not for bullseye shooting. The laser works awesome and POI was not noticably affected.
After the medium dries, it gets a little louder, but not much.
From fifty feet, it sounds like a small stick snapping.
I am very impressed. I can't imagine anyone being disappointed in this suppressor.