Cold calling/mailing for a multi family

[William Hagedorn]

There is a multi family near me that isn’t currently for sale. It has some nice symmetry for me as its where my family lived when i was born - i think (assuming the numbers work) itd be very cool to own if possible. My question is about cold calling or cold mailing the current owner to see about him selling. Does anyone have experience with this strategy?  What methods of contacting the owner has been effective for you?  Any letter examples or scripts to consider?  Also, how would you approach the seller financing discussion if that is where id like to lead it?

Thank you all