The Jerry Kuhnhausen shop manual fully explains how to determine if you might have a problem with the collet bushing.
Basically, some slides were too small inside around the rear of the collet fingers, over-sized collet, or the barrel was over-sized and this caused the collet fingers to "knuckle" when the barrel unlocked.
With not enough clearance, when the barrel started to unlock, the collet fingers had no room to open so the fingers tried to buckle instead of flex. This is known as "barrel spring".
The test is to remove the slide and hand check how the barrel feels when you push it up into the locked position.
If you feel a springy tension on the barrel, you can correct it by lightly clearancing the extreme rear edges of the collet.
To do this, use a stone to bevel the rear edges of the bushing at about a 1 degree angle. DON'T under-size the bushing, just bevel it enough to eliminate the springy feel.
If you're going to own 1911 pistols, the Kuhnhausen shop manual Volume One is the best money you can spend, and it's isn't expensive. Buy it from Brownell's or Midway.