High rise mounts are not legal for Hunter's Pistol and Field Pistol.
Get any Rifle scope that you can see out of. Get a good base and a set of the tallest rings you can get. There are several "see-thru" ring sets available on the market. These are still legal.
You will be shooting the gun in what is called the "taco" hold. Fire similar to a rifle as far as scope position. I put my left hand on the scope bell. Some of the other shooters put their left tumb under the stock and the fingers over the scope. Whatever is comfortable.
Shooting out to 100 yards/meters pending on the range. Lots of the hornet barrels like 50 grain or smaller bullets. Some will shoot a few of the 52, 53, and 55s. I wasn't lucky enough to find any that will shoot in mine, yet....have a set of swage dies coming. We will see.....
Good luck, you will get hooked. Practice, practice, practice, shoot, have fun, shoot more, you will miss, miss, miss, miss, and then start to hit more and more and more and soon.......you will get there. Just takes lots of shooting!
Steve