99.5 drip free. I sometimes use a more heavy duty generic model for harder caulk and it's a pain because that one drips all over the place, making me appreciate the design of this one all the more. There are definitely times I wish the compression ratio was higher on this gun, but this is ideal for 80 of the jobs I've done and it lasted me a good 10 years before it started losing traction. Without hesitation I just purchased another one to replace it. Highly recommended. I'm actually buying one for a friend as a house warming gift, as a good caulk gun is something everybody needs, but doesn't necessarily know it ;-)
Rating: [5 of 5 Stars!]