Help-part 2

[hillbillydruggist]

Loaded 243 win, 100gr,95gr,90gr all were fine, then got to 58gr and this happened , i am using a Lee Bullet seater, some times i here it kinda snap, rattle when I was loading the other rounds but they seated fine.

Thanks for the help!

 

[270 ftw]

Seems like bullet too fat for hole lol.

Sure those are the right bullets?
Did necks get sized down too much? Maybe took the expander out of sizing die?
My best guess...the little cone shaped piece in the lee seater is all cocked up in there. Not floating around like it's supposed to. Unscrew top and check it out.

 

[dmoran]

Not enough chamfer and/or to ruff of chamfer

 

[Fotheringill]

Methinks the top of the case is hitting the die when the ram is used. Do not inquire as to why I might know this.

 

[Bojo]

Bad chamfer and using flat base bullets ?
Is you shell holder clean with brass seating in it completely ?

 

[hillbillydruggist]

Seems like bullet too fat for hole lol.

Sure those are the right bullets?
Did necks get sized down too much? Maybe took the expander out of sizing die?
My best guess...the little cone shaped piece in the lee seater is all cocked up in there. Not floating around like it's supposed to. Unscrew top and check it out.

Right bullets, good chamfer, flat base bullets
I unscrewed top , there is a rod with concave end pointing down

 

[grovey]

Set your die up again. I'd say you have it too low. Your not trying to cam over when seating bullets.

 

[270 ftw]

Clean any debris or gunk and hopefully the old take it apart and put it back together will fix it. What you using for sizer?

 

[bloc]

I suspect the bullet toppled to the side as you raised it into the seating die. It's happened to me even with boat tails . . . if the bullet is kind of resting on the case mouth, a slight motion can dislodge it and it can start into the die almost side-on.

 

[hillbillydruggist]

Clean any debris or gunk and hopefully the old take it apart and put it back together will fix it. What you using for sizer?

lee full length sizer

 

[22BRGUY]

Cases necks get very soft if over annealed...….possible?

 

[270 ftw]

Like the others have said the combo of flat base and maybe that lee sizer is leaving you a pretty tight hole so even a degree off is over stressing the brass before bullet starts to slide. Measure the neck of a sized case and then of a loaded case of a bullet that will seat. That will give you an idea of how tight your hole is

 

[hillbillydruggist]

Cases necks get very soft if over annealed...….possible?

Haven’t annealed, I thought i had chamfered enough because larger bullets were seating OK, i chamfer by hand so maybe i need to chamfer more?

 

[hillbillydruggist]

Like the others have said the combo of flat base and maybe that lee sizer is leaving you a pretty tight hole so even a degree off is over stressing the brass before bullet starts to slide. Measure the neck of a sized case and then of a loaded case of a bullet that will seat. That will give you an idea of how tight your hole is

Thanks, would maybe a higher quality die help? Not knocking Lee, i was just wondering?

 

[ckrifles]

Never used a Lee seater, but looks like the bullets are a little cocked in the die. Not much bearing surface on the 58 grain 6mm bullet.

 

[270 ftw]

If tight hole is the problem...say like .005 thou ( difference between sized case neck and loaded case neck) or more it's not necessarily a quality issue, just the diameter of the expander ball in the Lee die. I guess it would be a quality issue if that's not what they were going for. Measure and report back if u can.

 

[270 ftw]

You can use a different bullet for this test...one that does seat without crushing case. Just to give us an idea

 

[hillbillydruggist]

You can use a different bullet for this test...one that does seat without crushing case. Just to give us an idea

Thanks, the 90gr,95gr,100gr all seated fine, i loaded some of these after each crushed case, i only got 1 out of 6 cases to seat the small bullet.

 

[hillbillydruggist]

I don’t know if i reassembled the die wrong? Do i need to buy a Lyman expander die?

 

[Bc'z]

I'm thinking your necks are to tight of tolerance for flat base design, or quite possibly the length.
Bullets are getting cockeyed during seating.