Hosepipe ban: projectile range

The hosepipe ban starts here in 10 days time. I tested the range of a projectile using the hose. In theory, a projectile goes the furthest horizontal distance when aimed at an angle of 45 degrees to the ground. See the top picture for this one. A much bigger angle doesn't fire it as far horizontally. That seems quite easy to understand. Less easy is that it won't go as far at a lower angle. This time the answer is that it doesn't have as far to fall so can't do along as much before it hits the ground.