Until my qual, I've never used a B27. I've used half sized targets a few times. I usually just use a 16" square target with center square bullseye and the quarter bullseyes. With careful slow fire, I have no problems getting 95% of my shots on a 16" target at 50yds. At least with the right handgun (my M57 is lucky to get all my shots on a 16" target at 15yds because it shoots VERY low, like 6-7" low at 15yds, at 50yds it's like 20" low. Aim for the head and you might hit mid torso. My Glocks and several of my other handguns though are mechanically accurate enough and the POI is close enough I can do it at 50).My wife is the same!
I picked up a few b27 targets the other day for her to practice. Let me say that target is HUGE!
Anyways, I ran her through the course, my son ran the stop watch and gave the commands. She had no issues what so ever. She pretty much blew out the center of the target with her 1911.
I ran the course also, my son ran the watch, and gave the commands. No issues, just for giggles, at15 yards I put all 5 shots in the groin area. My wife and son, got a good laugh out of that.