Long range .22 LR shooting

I visited my parents this weekend and had a chance to shoot my father's old trusty rimfire rifle. It's an old Baikal Toz-17, made in Soviet Russia. I put a Pilad 4x32 "mildot" scope on it, using Sako Optilock bases and rings. I had some trouble zeroing it, as the dovetail wasn't centered over the rifle's receiver. Fine Russian craftmanship indeed!

After zeroing the rifle, I used a chronograph to measure  muzzle velocity. Then I added the velocity and bullet information to Applied Ballistics software on my tablet. After tapping in the atmospheric conditions, it gave out a range table.

The Pilad scope isn't a true mildot scope, as the dots aren't 1 mrad (mils) apart from eachother. In reality, they are 3 mrad apart. So I had to do little calculation the get the range table right for the scope.

I went out to a nearby field, where I set up a few 30 cm x 20 cm metal targets at ranges 100 m, 160 m and 210 m. 100 meters was easy, first shot hit. 160 meters was bit more difficult, my wind call was a bit off, so after correction I got a second shot hit. 210 meters was quite hard, as the magnification of the scope wasn't high enough to see splashes at that range on muddy ground. I got a few lucky hits, but nothing consistent.

The ammunition I was using was Remington Thunderbolt, which isn't the best choice for long range shooting. That's because it's muzzle velocity is supersonic, which causes it to fly at transsonic speed at one point, which lowers accuracy at longer ranges.
But shooting the Baikal was fun, it made me start planning on building my own long range rimfire rifle. Cheap to shoot and good training.