My youngest son was heavy into Air Soft before he was old enough to get real guns and he brought home a full size 1911 “spring gun” that I “confiscated”. The trigger pull was atrocious and the sights were marginal at best but for holster drills it was the Cats A$$. It also liked “sniper weight” pellets 62gr (??? I think). If you could press through the trigger pull the doggone thing was amazingly accurate at 7 yds. A coffee can full of news paper with a blue tape cover screwed to the garage door offered a nice catch can. Be advised, WERE EYE PROTECTION!!! I bounced one off the lip of the can when shooting from retention position and it left a nice welt on my right cheek.
Spring guns are one shot affairs and I specifically did not train to do a FTF drill with it, only holster / draw work. When I went to the real thing I had no issue transitioning and truth be told I think my accuracy was better, my speed was certainly faster.