Seating die induced runout

[AlNyhus]

Pics or it never happened!

Here 'ya go. The sharp eyed will also notice the 'o' ring between the lock ring and the press.

 

[L.Sherm]

I also notice the type of lock ring you use Al exactly what all mine have, I cannot stand the ones with the set screw into the threads of the die, the ones that did have that I converted over.

 

[PatMiles]

..."remove the shell holder clip from your press and substitute an 'o' ring."

So you free floated the shellholder in the ram by removing the shell holder clip and free floated the die with the o-ring?

 

[AlNyhus]

So you free floated the shellholder in the ram by removing the shell holder clip and free floated the die with the o-ring?

Yes.

Another thing that can help with standard seating dies is an 'o' ring between the seating stem lock ring and the die. -Al

 

[charlie b]

The oring under the die lock ring is how the Lee lock rings are made. I like the witness marks on the press because it is easy to not screw them into the same place each time with the oring there.

 

[BoydAllen]

What was your method for choosing components for your reloads and what was your load workup procedure, also how are bullets seated in relation to touching the rifling? Are you limited by magazine length? If the stock has pillar bedding, what is the torque on your action screws? Added a little later: What bullet, powder and primer did you use for your reloads. How many combinations of seating depth and charge weight did you try?

 

[Jon Leary]

 

[Jon Leary]

 

[Jon Leary]

Forester dies start expanding the neck before the neck is free from the sizer. The idea is to reduce runout.

 

[Larryh128]

What I found when seating bullets is I seat the bullet approx 1/2 way down, rotate the case 180 degrees and finish seating. In my testing, it cut the runout in half. Rotating the case allows the bullet to center better is my belief.

 

[6MMsteve]

quit doing or thinking bout runout yrs ago, good bullets good barrel and it usually takes care of itself, just rotating the case when seating helps I guess been doing that for 7 yrs, and more concentration on CH and trigger pull or touch, making sure I give myself a chance to shoot a good group, not thinking about chicken

 

[Coyotefurharvester]

Take a rd with 0.010 runout and chamber it, carefully slowly extract and check run out again??

 

[B y r o n]

When you say you checked the runout of sized cases, did you measure the outside or inside the neck of the case? You'd also have to check at the neck near the shoulder junction and at the end of case to determine the difference or actual runout of the case.

Just my 2 cents.