GPostal wrote:I started resizing some .303 Remington brass - fired twice - when I noticed these dimples in the case side.
What causes this ?
Ive checked settings on the press and still does it.
Baldrick314 wrote:Could be too much lube but it looks pretty severe for that.
Were you full length sizing?
Warrigul wrote:GPostal wrote:I started resizing some .303 Remington brass - fired twice - when I noticed these dimples in the case side.
What causes this ?
Ive checked settings on the press and still does it.
You weren't firing light loads by any chance?
Other than that s h ite in the die or too much lube.
Lorgar wrote:I got the same while necking down all my .308 brass to 7mm.
Forcing the .308 neck through the .284 die for the first time is obviously more difficult and excess pressure is applied to the body of the case crumpling part of the case. I found it more on the bottom of the shoulder sometimes continuing into the wall.
I don't neck turn my cases so there was the additional thickness after necking down. I had a significant number of cases do it on the initial FL resize, after firing the dimple popped out and cases were good as new. After they'd been fired and the necks had stretched a little I necked sized them (and trimmed them) for reloading again and only a handful crumpled the second time around. After 2-3 firings/resizes the problem resolved itself.
How difficult are you finding it to press the die through the necks?
Lorgar wrote:I got the same while necking down all my .308 brass to 7mm.
How difficult are you finding it to press the die through the necks?
bunnybuster wrote:Simple,too much lube,buildup in the die or pressure dent caused by air lock in die,overlength case will not cause this,[nor a sloppy chamber] just load 'em and shoot 'em.
WTF is this lube detonation ? what does it sound like ? what MV does it generate ?
Be Safe BB.
Bills Shed wrote: Sometimes I think people are trying to over complicate a reasonably simple process with complex answers. Each step in the reloading process is reasonably basic.
Bills Shed wrote:I do not think we have to split the atom to find a solution for dimpled cases.
GPostal wrote:Seems fine, nothing unusual.
All good thanks - used less spray and gave them a good shake in the box afterwards and nomoredimples,
Thanks all
GPostal wrote:All good thanks - used less spray and gave them a good shake in the box afterwards and nomoredimples,
Bills Shed wrote:Lube Detonation!!
I agree it is a new one on me. Another myth in the reloading world? Sometimes I think people are trying to over complicate a reasonably simple process with complex answers. Each step in the reloading process is reasonably basic. You can keep each step very simple and still keep it safe, or you can get right up to the OCD stage and have fantastic results. I am somewhere in the middle. Sometimes we all make mistakes and bend a few cases or seat a projectile poorly. We learn from the mistake and dont make it again.
I do not think we have to split the atom to find a solution for dimpled cases.