More for practice.
The score rings on some targets are off on vitals a bit. Heart shots are usually 8s with some 10s. I go for shots placed as if hunting, not really for score.
Case in point, I shot a deer target yesterday that was leaning backwards about 15 degrees. The shot was uphill so the angle was magnified by that too. I made a great shot in the heart area. It scored a 5. It was about an inch out of the 8 ring. If I were to have hit the top of the 10 or, even worse, the 8 ring, it would have been a single top lung shot at best. A top of the 8 ring would have just been a wounded deer with no chance of recovery.
I shoot for hunting season practice. I get more out of it that way.