What's a good way to test if your scope is tracking well?
Make a dot on a piece of paper. Shoot 4 shots into that dot, then turn your windage 6 inches right and fire 4 more times at the dot, then turn the elevation up 6 inches and fire 4 more shots at the dot, then turn windage 6 inches left and fire 4 more shots, then turn elevation down 6 inches and fire 4 more shots, you should at that point have 8 shots in the original dot. That's how I do it
What scope tracks in inches?
You have to have a super tight shooting rifle to shoot it. The better method involves one shot, and no others, but you need the rifle locked in so it cannot move.
Make an "X" on the top of a 3' tall piece of paper at 100 yards. If you are in Mils, come down 3.6" and make a narrow line, 3.6" from tjere and make another one, repeat until you are 36" down from the X.
Make the scope look dead center of the "X". THE SCOPE CANNO MOVE FOR THIS TO WORK!
Dial impact up 1.0 Mil, the reticle should now be looking exactly on the first hash mark below the "X", make any notes telling perfect, high or low in Mils. Dial impact up 2.0 Mils, the reticle should be exactly on the second line below the "X". Repeat for as many Mils as you will ever dial.
If you want to shoot it to see (need a very tight shooting rifle) make the X on the bottom of the paper. Check zero there. Dial up 1.0 Mil, shoot one round. The bullet hole should measure 1.0 Mil above the "X" in the reticle, repeat as far up as you would like.
Replace the Mil with MOA if you have an MOA scope. Then you would make a line 1" above the "X", 2" above, ect.
Checking windage tracking is not something I ever do, since I rarely dial wind anyway. Elevation is way more important since it is dialed all the time.