I reloaded a bunch of .243 Win rounds. (With a Lee Classic Loader) I have never had any problems with these rounds (100+). I took some to the range to prep for a 500 yard match. 8 out of 10 failed to ignite the powder! These were R-P headstamps. I tried 4 Winchester headstamps and 4/4 fired perfectly.
Having just pulled 4 of the boolits (and shattering my Dillion kinetic boolit puller ) I suspect I know what went wrong.
The primers were indented substantially from the firing pins. Of the 4 I got seperated, 3 were definitely detonated, one is questionable.
The powder charge weighs more than that which I filled the cases with. There is a non powder substance in the powder. I suspect it is walnut media. The interiors of the cases seem clean (no media stuck anywhere).
I can only surmise that the media had clumped up on top of the primer to the point that the detonation failed to ignite the powder.
As I usually load with a Dillion 550B, I guess the primer area was not pushed clear by the Lee hand tools I loaded these with.
Does anyone else have any input on this?
Having just pulled 4 of the boolits (and shattering my Dillion kinetic boolit puller ) I suspect I know what went wrong.
The primers were indented substantially from the firing pins. Of the 4 I got seperated, 3 were definitely detonated, one is questionable.
The powder charge weighs more than that which I filled the cases with. There is a non powder substance in the powder. I suspect it is walnut media. The interiors of the cases seem clean (no media stuck anywhere).
I can only surmise that the media had clumped up on top of the primer to the point that the detonation failed to ignite the powder.
As I usually load with a Dillion 550B, I guess the primer area was not pushed clear by the Lee hand tools I loaded these with.
Does anyone else have any input on this?
