Help please!!!

[paul o']

Wrong stem and 2 ways I have sorted this out over the years.
1 buy the correct one too easy lol .
2 Get some JB weld fill up the clean oil free stem well lube a bullet push this into the stem allow to go hard/sticky remove overflow leave bullet in until fully dry spin/remove bullet LOTS OF LUBE ON BULLET !!!! . Then clean with a sharp blade any flash and use once done its all good to place back in the die body! this will have given you a perfect stem for your shaped bullet.
---------
3 while your at it measure the OD of the bullet and the I.D of a few prepped cases just to find out if your resizing is forming a crimp to the mouth of the case and this will also make it hard to push the bullet down and add to your bullet deformation .
Hope you can use some of the info to prevent damaging your bullets.
Border is spot on they are tight . I always prep new brass due to this as when testing it can give you false values.

 

[User00044]

Add to the list , possibly incorrectly set seating die. It may be crimping before the bullet is seated .

 

[Foxyboy43]

New lapua brass often has excessive neck tension. I was advised to run an expander mandrel through it first. (6mmBR, 6.5x55 &308w) this may resolve the issue.

I would advise sizing all new brass - have a look through your new little darlings - deformed/crushed case necks are all too frequent.

 

[NigelM]

New lapua brass often has excessive neck tension. I was advised to run an expander mandrel through it first. (6mmBR, 6.5x55 &308w) this may resolve the issue.

This^^^

I had exactly the same with 22BR and 69gr TMK's. Only on new Lapua brass. Fully resized before loading with correct bushing. Solution was to run expander mandril through first and then resize. Solved the problem instantly. The new Lapua brass was just too tight in the neck.

 

[remmy243]

The 120gr bt just don’t work simple sell them to me

 

[Mungo]

I had something similar ( not as bad as that) with specific bullets which turned out to be the seating stem in the die, i sent a bullet -off to the die manufacturer (Hornady i think?) and received a new stem back it cured my problem

This.

Long for calibre bullets (like those above 140gr in 6.5 or 168gr in .308) need a different seating stem. So if you have the wrong stem installed (stem for short bullets when seating long bullets, stem for long bullets when seating short), this happens.

 

[User00044]

Has the issue been resolved?

 

[Smellydog]

Has the issue been resolved?

Bet it hasn't

 

[Foxyboy43]

Bet it hasn't

Oh yes it has…….

 

[2Ll’s]

A friend of mine asked me this question but I don’t have the answer. Can anyone shed some light please….

The picture is taken of a reload 6.5x284 Norma. New Lapua brass, nosler 120gr ballistic tip. Ugly marks and crushing of the bullet. Redding S-type bushing die used.

He tried swift scirocco(130gr) and Norma bondstrike(143gr)bullets and they don’t do it, no marks. But for some reason the Nosler BT and 130gr Accubonds both seem to crush. And the load is lot compressed either so something is causing this and I can’t get my head around it. Tried both RCBS rockchucker and Lee hand press, both causing the crushing. Any help/advice would be appreciated.

Happened to me all the time with new Lapua brass, resize or lube, once fired brass has never been an issue. I use the 120 ballistic tip too.

 

[Greenmist]

Too much neck tension, are the bullets being shaved as they seat, check the top of the case to see if the jacket is being shaved off, I had a similar issue with a redding neck die while using 75gn amax

 

[Hunter300]

Well then…… The mystery sort of continues…… Checked the stem, it’s the correct one…. Dry lubed the bullet NO PROBLEMS AT ALL. So this would make one thing it’s neck tension…. However ONLY the Nosler bullets are getting squashed, and there are no shavings to suggest tight necks… So my friend now opted for a dash of dry lube and all goes well…. I would hope that once they’re fire formed the problem would disappear which would then point the finger back at neck tension…. Let’s see what happens

 

[Ratwhiskers]

Neck Tension, maybe and then again maybe not....

New cases can at times come with rough internal surfaces due to the manufacturing process, this can have an adverse effect on bullet grip when they are seated into the neck of the cartridge.
lf an expander is used prior to seating it generally smooths out the surface and no one ever notices the extra grip on the bullet jacket, or again if a lube of some kind is used either in the case sizing or bullet seating process.
Remember not all bullet jackets are made equal, with some being copper, while other are gilding metal or other alloys, hence why it is only happening with one make of bullet.
Also has friend bothered to measure the diameter of the different bullets?! as again not all may be equal.
There is every chance that once the cases have had a firing, the carbon deposits in the neck with allow the reluctant bullets to pass freely from then on.

 

[Foxyboy43]

Hmmm. Wild shot - measure the bullets!

 

[Hunter300]

I am definitely not the best reloader in the world, but we have gone through all the censorious we could think of, including bullet size…. I am on board with the idea Rat has that different bullets is made of different metals. Although we measured the stem and found it to be size, measuring the mandrel isn’t that easy… We ordered an independent expander mandrel to try on the new brass. Will keep you posted

 

[Smellydog]

Hmmm. Wild shot - measure the bullets!

First thing I would of done

 

[Stalker62]

Wild shot - measure the bullets.

Beautiful serendipity.

 

[palmer_mike]

No my

Well then…… The mystery sort of continues…… Checked the stem, it’s the correct one…. Dry lubed the bullet NO PROBLEMS AT ALL. So this would make one thing it’s neck tension…. However ONLY the Nosler bullets are getting squashed, and there are no shavings to suggest tight necks… So my friend now opted for a dash of dry lube and all goes well…. I would hope that once their fire formed the problem would disappear which would then point the finger back at neck tension…. Let’s see what happens

No mystery, re read post number 2 on this thread