OOPS! -- Neck Sizing Goof

[ELR LVR]

Goofing around in the shop yesterday I wanted to see what would happen if too small a neck sizing bushing was used on a freshly annealed Lapua .223 case and the run in a mandrel. Not too surprised, but a bit of a chuckle on what came out. I normally try to use a bushing that will size to just under where I want to be and then run the mandrel. Lapua has thicker neck walls than Starline so a larger bushing needs to be used. Whatta Hobby!
View attachment 1717605View attachment 1717606

I found out at one time, when wilcatting a cartridge, a person may NOT want to anneal the brass before forming for the same reason
---
Better to try forming (squeezing down brass first) before anealing it
one would think it will squeeze down easier if annealed but it softens the shoulder too much
---
I've had that happen with new brass a time or two also though

 

[Fire Dog]

Also accomplished by not having any movement on the bushing in a bushing die, being too quick running a piece of brass into the die and collecting the neck on the edge for a fold-over… Over annealing can also result in the case necks collapse.
Seating a bullet in a neck that is too tight, that is especially painful when it is an expensive piece of brass… that is the reason I have taken to brushing the inside of case necks these days…
Nothing worse than to have a catastrophic failure at the end of the process of loading rounds for a match the following day…

 

[NF1E]

As said, I was goofing around in the shop and put a .244 bushing instead of the normal .247 I use with the Lapua. Usually after the .247, the carbide mandrel slides easily into the neck. With the .244 not so much.

 

[NF1E]

Thanks for all the replies. Nice to see such a great spirited group of folks with senses of humor. Whatta

Hobby!

 

[jimmymac]

Gumby amd Pokey!

 

[ebb]

You can get a milder version of this by missing the neck chamfer and trying to seat a flat based bullet. The one I had issue with was bulged just slightly and was almost unnoticed.

 

[Retired shooter]

Gumby amd Pokey!

SEMPER FI. to Gumby & Pokey



OH yeah. you too Sarge

 

[NF1E]

That flag flew over the embassy in Bagdad for the Marine Corps birthday 2011 courtesy of my eldest who was stationed there at the time. Whatta Hobby!

 

[Retired shooter]

That flag flew over the embassy in Bagdad for the Marine Corps birthday 2011 courtesy of my eldest who was stationed there at the time. Whatta Hobby!

View attachment 1718086

My grandson stationed at Pendleton now, will be deployed sometime in Jan.
As we all know " HURRY UP & WAIT"

 

[Fast14riot]

Got a few of those on my shelf from an old RCBS die in 6mm-250 that someone put a .257 caliber stem in. I measured the expander ball and it was correct, but .257>.243 and took me a few attempts to realize what was going on, lol!

 

[Hipshoot]

OK! I'll probably be banned for this but I gotta do it!!!

This is what my penis looks like after she says----IS IT IN!

 

[JFrank]

Goofing around in the shop yesterday I wanted to see what would happen if too small a neck sizing bushing was used on a freshly annealed Lapua .223 case and the run in a mandrel. Not too surprised, but a bit of a chuckle on what came out. I normally try to use a bushing that will size to just under where I want to be and then run the mandrel. Lapua has thicker neck walls than Starline so a larger bushing needs to be used. Whatta Hobby!
View attachment 1717605View attachment 1717606

That doesn’t look too bad, maybe need to tweak the seating depth a wee bit.

 

[GotRDid]

Missed a case mouth flare on this one…