We used to do a lot of long range shooting with handguns, mostly revolvers. We had several places to do it; one was a 28 acre soybean/corn field. We shot at a 55 gallon drum, using the hood of a pickup as a rest. We estimated it to be a little over 500 yards. Using large caliber guns (.45 Colt, .41 Mag) it wasn't all that hard to walk the slugs into the target. The barrel is still there, full of holes. Shooting the .45 Colt at 800-900 fps, it seemed to take forever for the 'plunk' sound to arrive but you have to consider that's the time it took for the bullet to strike PLUS the time it took for the sound wave to come back to the shooter. That old barrel is still there but there are too many houses close to that field now to shoot there.
Hardest to hit with was .45 1911 because of the front sight.
Hardest to hit with was .45 1911 because of the front sight.