Matto, your shotgun already has some choked, the question is how much choke do you have, & how much you need. Older Browning auto 5s will be marked on the barrel under the forarm and as I recall it coded. with * & - , but right now I can' t find what the code translate to. Newer auto 5s will be marked on the side of the barrel or will have screw in chokes. (invector chokes).

Standard chokes are: improved cylinder, modified, & full, other chokes are cylinder, skeet, improved modified, and extra full.

If you shotgun is choked modified you will be fine for turkeys out to 30-35 yards.

You might check browning' s web site for the choking code if your gun is one of those.

Good Luck, and let me know if you find out the choking one your gun.