OK, I've said it before, I'm new and sometimes one just doesn't know enough to argue. A guy made the statement to me that he crimps all of his centerfire rifle ammo because crimped rounds are more accurate due to the milliseconds between ignition and release of the bullet. He says those milliseconds allow the gases to build up inside the case???

Our gracious host, Saeed, performed a study on this same subject that is available on this site. I believe the outcome was that crimping did improve accuracy. jorge

Some cartridges need a good crimp so they have time to build a good fire before releasing the bullet and proper neck tension is always important for good ignition. To say "crimped" bullets are more accurate is not true. Jim