Any loud noise will usually get a gobble.
I was trying to roost some one eve with an owl hooter and couldn't get a response. Somebody honked at their cows and one fired off.
Couple years back some tresspassers were on our property blasting rock music on 4 wheelers. Not a very smart thing to do, but beer was involved. While I was trying to get a bead on the tresspassers a tom sounded off to the music late at night. I was waiting on them when they drove out of our property, but let em go as it was just teenagers having a good time.
Reloader