I chronograph every batch of competion ammo I reload since the day I failed to make PF with a load that was well over the 170 mark the previous year. I believe it was due to different powder lots

I usually don't bother with my practice loads except a 2 or 3 times a year just to check they are within the ball park.

But what I do do is regularly practice out to 45 meters/50 yards on a 10 inch plate so I know where I need to aim to hit at that distance and I record this in a note on my phone for reference during competition

One thing I did discover. After more than 25 years of using Federal primers for reliable ignition I had to resort to Winchester primers when Federal was in short supply. The velocity increased by more than 50 fps on average over a 10 shot string.

With my rifles I will chronograph before sightingin/checking zero just so I can get a trajectory table which I print off and place in a file for reference.