Loose bullets?

[Wanted]

I've ran 250 .223 rounds. I have 5 where the bullets are loose at the case mouth. I tried to re-crimp, with no luck. Anyone encounter this before? I pulled the bullets and they measure.223. I'm loading 55gr. Hornady Spire point, Hornady once fired brass, on a Dillon 550. I'm thinking maybe over chamfering? I use an RCBS chamfer tool attached to a drill.

Edited November 27, 2010 by Wanted

[mscott]

Chamfering shouldn't leave rifle bullets loose. Sounds like your sizing die need to be adjusted properly as in screwed farther down.

[Tom Freeman]

Make sure your decapping pin is not bent.

[GSWEAR]

Make sure your not over crimping depending on what kind of crimp die your useing, the Lee factory crimp die works well.

[Paracco]

Check the OD of the expander ball in the sizing die. It should be .002 smaller than the bullet.

[Worriedman]

Check your neck wall thickness. Out of 250 pcs. of brass, there is the chance that a few are on the thin side. Resizing works on the outside of the case neck, and a thinner wall section will result in not enough tension to hold the bullet in place.

I use Redding S type dies, which allow me to change out the bushings to manage different neck thicknesses. I segregate those pieces of brass with thinner sections out. Typically they do not last as long, as the amount of "working" needed to bring them into spec. shortens the life of those cases.