Reloading issue

GoatLD259

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Good Evening Hide,

I ran into a problem as I was doing some dry runs (no primer, no powder) and noticed a problem. I am reloading 40 Cal 180 grain, RNFP Blue Bullets. As shown in picture one, there is a half moon that forms on the top of the bullet. FWIW, it is happening at the Dillon Seating die.

"Seating plug 1" is the end of the seating plug I am using to seat the bullet. Is this the right end, or should I be using the end as shown in "Seating Plug 2?"
 

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  • Seating plug 1.png
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  • Seating Plug 2.png
    Seating Plug 2.png
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greentick

chancremechanic
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Feb 20, 2021
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I wouldn't sweat that if if feeds fine. Looks like you can use either side depending on the projo.

Screenshot_20220406-225508_Drive.jpg
 

CK1.0

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Try the other side, see if it's better... if not, go back to the other side or try another seating die.

Just make sure you've got enough flare on your cases, if it's seating them against too much resistance it may leave a mark no matter what until you get that dialed...
 

MarshallDodge

At the Reloading Bench
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Jul 19, 2007
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My Dillon dies do that to the Blue 9mm bullets. You could glue a thin layer of plastic on the face of the seater to smooth it over.
 

Skeptic1

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Dec 8, 2019
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Add two dots and make it a smiley 🙃.

While safety is priority. Many add an unnecessary amount of steps and thought to reloading

Consistancy wins the day
 

smoothy8500

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Oct 10, 2012
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Is it going to affect the projectile's BC where it will hit the wall at 800 yards and fall out of the sky? Just asking for a friend who wants to know...

That seater is the semi-wadcutter. Didn't they include the round nose insert too? If you try side 2 it will contact on the ogive and maybe work better, or could mark up the ogive. In the end it is just cosmetic.
 
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