Well, it ain't loaded. Powder's wet.
9 seconds sound clip from the Unforgiven movie soundboard.
You can hear this line at 01:16:57.992 in the Blu-ray version of the movie.
Quote context
[...]
- Maybe, yeah, I guess. But the fact is I ain't carrying no firearm.
- Get up.
- Come on.
- What's this, for snakes and such?
- Yeah. We don't have any snakes in here, Mr. Hendershot.
- Well, it ain't loaded. Powder's wet.
- You see, Mr. Beauchamp? This is the kind of trash I was speaking of!
- But you won't find them in the town of Big Whiskey.
- Hurry up. You know what to say to Little Bill.
- You got to look sharp for that lone pine. If you miss the pine, you ain't going to find it.
[...]