Somewhere around 200 yards. 225 would work real well too. I don't like 300 because the max ord of the bullet is a bit too high in my opinion.
Co-witness your visible laser at 200 yards with your POA-POI for 200 yards in your day optic. Do that right before sunset so you can see the visible laser easily at 200. You'll be money for everything inside of that distance, and beyond that you'll begin to have a divergence between the laser and the bullet depending on where your laser is mounted. But, you'll still be good to go out to 350ish on E-type steel target sizes holding center-mass with most barrel/bullet combos.