You need to "learn" your rifle/load.
Taking the word of others about trajectory is taking the chance that your rifle isn't different from any other rifle of the same make/caliber/barrel length - and most likely it is different. The ammo you buy/use may be different as well. All 150 or 180 grain hunting ammo is not the same.
Once you shoot it at your desired "zero" range. You can come back to 25 yds., or 50 yds. and shoot it and then note/remember POA vs. POI for that bullet/cartridge at that closer "zero" range. Then, if you have to re-zero for some reason you can do it at a shorter range - for that same rifle/cartridge combo.
I've always been a fan of starting at 25 yds. Nothing more frustrating that shooting farther and the bullet impacting someplace besides the paper and then having to try to see where the dust/dirt is getting kicked up and making adjustments from there.
I start at 25 yds., get POI about 1.5" below POA and then shoot at 100 yds. to make the adjustments to get POI on POA. Then I rely on the BDC (bullet drop compensator) reticle or the dial on some of the older scopes (and those won't always be right as you move from 100 to 500 yds. I've never seen things go south (BDC compensated scope vs. bullet trajectory) inside 300 yds., only once at 400 yds. but it's something you need to confirm vs. just relying on the manufacturer of the scope.