Originally Posted by
35remington
The taper crimp really doesn't do much to hold the bullet in place. A light crimp doesn't do anything at all to hold the bullet in place.
Should you doubt, it's easy to discover how to test this. It's best to figure the crimp turns in the mouth flare from the expanding step and is a reliability aid, and no more.
Because that's what it is really doing.
The load you're shooting feels like a full power load because it is pretty much a full power load. At least, it will replicate the velocity of comparable weight factory ammo in a "close enough" fashion. The crimp doesn't have anything to do with the "feel" of the load, as its influence on holding the bullet in place is minimal in terms of outgoing resistance.
If you don't apply the crimp the loads will get the same velocity.