No Bullet Drop in Training Mode?

There's bullet drop in that mode. You need to step back on the hill a bit further and shoot targets in the back. Or you can try shooting the targets on the mountains (only a Kraber and Charge Rifle can hit them, but Kraber will have nasty bullet drop).

Honestly, Firing Range ain't good for learning bullet drop. G7's Bullet Drop is still confusing to me. It's best used at mid-long range with 2x or 3x. Sometimes 4x.