The range I use most often is indoor and only 50 feet (60 actually, but marked at 50 so that's where I stop my targets). I use B-29 targets - which are about 1/2 sized B-27's so they present the same silhouette as a B-27 at 50 yards. I shoot from between 30 and 50 feet away most of the time, and speed drills at 21 feet (90 feet, 150 feet and 63 feet respectively). When I use a regular B-27 at 7 yards I feel like I'm shooting the broad side of a barn.
The problem with using a reduced silhouette is point of aim. Point of aim is still only 50 feet away or less, so it could set you up for failure IRL, say shooting a BG 150 feet away (I can't imagine doing that is likely for other than a LEO), and you're point of aim is potentially a few inches different than what you've been practicing with.