Neck Cave In

[stank.243]

Since my google searches haven’t turned up any solutions...
Anyone have any idea what is going on here? This is the 3rd out of my Hornaday brass that has had this happen. Also had it happen with some Remington brass. It is happening when I seat the bullet. I get about to end of seating and *pop* the neck caves in. Ideas??

 

[Tx_300wsm]

Back your seating die off a few turns and try again.

 

[idig4au]

what he said. I back of my seating die at least one full turn from shell holder when seating bullets

 

[elkguide]

If your necks aren't properly sized/opened or lubed, you will find this happening especially with a longer bullet. Had the same thing happen to me with some new brass that had possibly gotten banged around in shipping but once I neck sized the remaining new brass, no more collapsing. (and it was .300 RUM brass so it was a very expensive learning experience!!!!)

 

[mtswampfox]

22 hornet necks are especially weak. Not chamfering, starting bullet crooked, improper die setting will all ruin a case

 

[tdhanses]

Wow, never seen that before, crazy!

 

[Downeaster]

Holy crap! Feel is the name of the game. Trim and chamfer all your brass and work the die in to get the right tension. Thats next level shtuff right there!

 

[cmahoney]

That’s quite an improved cartridge.


Sent from my iPhone using Tapatalk

 

[tyeager2964]

I actually had this happen to a lessen extent last weekend. I went from loading 100 gr 243 to 80 grain and instead of just moving the seating stem I figured I would drop the die a few turns to make up the length difference.

Long story short I over compensated and the first one came out about halfway like that. Definitely back the seating die out.

That definitely probably had a lot of cam over at the end of your stroke

 

[muddydogs]

Depending on what dies your using the seating die probably has a crimp function built into it. So if your die is down to far your crimping your rounds and in your case your over crimping big time. Put an empty sized case in the shell holder, run the ram up then screw the seating die into the press until it contacts the case. This is where the crimp function starts in the die. If your not going to crimp your rounds, which you don't need to for most applications, once the die touches the case mouth turn the die back out a turn or two then lock down the lock ring. If you want to crimp the rounds turn the die down a quarter turn at a time until you get the desired amount of crimp.

It would be interesting to know just how far your die needs backed out if it is to low just for informational purposes. My guess is the die is almost touching the shell holder to get the amount of crushed case in your pic.