John:
There is no golden goose for the right script. You will always get rejection. If you're getting rejection all of the time then you may need to change your script.
It's very rare that on the first call I will get an appointment with any new account. My appointments with new accounts come after many calls and in some cases they could be two years or more in the making.
One thing I try to do when making vertical market calls is to the DM that we've also worked with other law firms like Smith & Wesson, Procter & Gamble and Levee, Mei & Alonee (Just a joke here, but the idea is to give them the name of other law firms that you have worked with and they may know) to either lower their costs, improve workflow and help with a business process. You can get much of the connection information from LinkedIn in most cases.
Anyone care to add?