Dillon SDB and brass hourglassing

[NavyShooter]

Hey guys,

I've put a few thousand through my SDB, and while the rounds all go boom, there's a bit of a cosmetic concern for me...every round ends up kind of an hourglass shape when I reload them.

I don't know if I'm setting something up wrong, but I'm wondering if it should be that way.

NS

 

[RePete]

Too much crimp?

 

[Canuck223]

If they look like old coke bottles, don't sweat it. To accomodate thinner waller Remington brass (mostly in .45acp) Dillon altered there dies to squeeze the case more ahead of the web. IIRC, the idea was to back up the case mouth tension with some case taper below the bullet to reduce set back during loading. If you are finding this in .45acp, .38 super, and perhaps .38 special, I wouldn't worry about it too much.

The big question is, do they check out ok in the chamber??

 

[NavyShooter]

Oh yeah, they fit perfectly in the chamber gauge (picked it up from Dillon too) and they fire fine too.

I'm just wondering if there's a way to fix 'em so they're not coke-bottles. BTW, it's 9mm that I'm loading.

NS

 

[Quigley]

Oh yeah, they fit perfectly in the chamber gauge (picked it up from Dillon too) and they fire fine too.

I'm just wondering if there's a way to fix 'em so they're not coke-bottles. BTW, it's 9mm that I'm loading.

NS

9 is a tapered case...a bit of a coke bottle shape is normal after a reload...

If you have a 5 station press...you could put one of the full length resizers in the last station...but it's cosmetic only