I have those rat shot rounds for a .22 revolver for snakes. They tend to jam pistols. I have never tried them with a rifle, because of the malfunctions with pistols.
1. A rifle does not take bird shot/shot shells. Those go in a shotgun.
2. Bird shot and buck shot are not the same thing.
3. Depending on how close, a dog will not just be "licking out all of that xxx shot". More likely, a dog is going to end up at the vet getting small steel balls dug out of...
Regarding advocating shooting the offending dog:
1. Please do not underestimate how much worse that could make matters. Are you prepared for the fallout of that action? Retaliation? Legal/civil action? Retaliation could be quite destructive or deadly.
2. Do you have the marksmanship skills to...
First the sheriff to file a report. It will be on record. Hopefully, you have pics. Everything has to be documented as well as possible. If a visit to the offending owner doesn't give you an agreeable resolution, then an attorney. Often, just a nasty letter from an attorney outlining what you...