If the shots are long, the choke needs to be tighter and you might find a hunter using the same tube for long-range pheasants or prairie grouse as he does for some duck hunting over open water. If the duck hunting is over decoys, close-in, the hunter might find himself using the same tube for teal and quail. Most choke tubes should only be hand tightened and can be removed without a wrench, but Remington choke tubes can back out with heavy loads and need to be tightened an extra tug. No choke tube should be overtightened or there is the danger it could cut right through the barrel. Don't use lubrication on the threads of a choke tube.
Oil can jam the threads.
If you're uncomfortable with bare metal, use a dry lubricant. Although one pellet in a vital area will kill a game bird, it usually takes several, depending on the size of the bird. Considering that there are several hundred pellets in a shot charge, you'd think putting five of them in a turkey's head and neck wouldn't be a big problem. And it isn't, but the more centered the shot pattern is, the more chance there is to lodge those five or six lethal pellets. If you're shooting birds with the edge of the pattern, you're asking for cripples or misses.