Question about dies

W

Weiserbucks

Very Active Member

Messages

1,659

• Sep 4, 2016

• #1

Does a Redding competition bullet seating die reference off the ojive or the tip of the bullet ? I just started loading a new lot of bullets and my OAL , as measured by my colomiter , is now .005 shorter . Haven't changed anything about the load except for the new lot of bullets.

 

J

Jagerdad

Very Active Member

Messages

1,759

• Sep 4, 2016

• #2

Every "Bullet" has differences and thusly, I make tests on new projectiles to get started.

I understand your true question and I hope my short reply helps. It seems to be good, one must remember how fast #'s change.

 

D

DRD

Member

Messages

8

• Sep 4, 2016

• #3

Great question. Take the die apart and look at the seating stem and I think you will answer your own question once you insert a bullet into the stem.

Are you measuring OAL to the bullet tip, if so I would strongly consider measuring oal off the ogive as well if you are getting into jump and jam. Tips are a funny thing especially with the bergers.

To confirm, new lot of the exact same make/model bullet?

 

M

mtmuley

Long Time Member

Messages

6,346

• Sep 4, 2016

• #4

Get the Stoney Point tools. No more measuring off of bullet tips. mtmuley

 

D

DRD

Member

Messages

8

• Sep 4, 2016

• #5

Here you go maybe this helps. Great dies by the way..

http://www.redding-reloading.com/tech-line-a-tips-faqs/143-seating-depth-variation

 

W

Weiserbucks

Very Active Member

Messages

1,659

• Sep 4, 2016

• #6

Exact same bullets, just a new box that is a different lot number. I am measuring OAL off the ojive , not the tip .

 

Cahunter805

Long Time Member

Messages

3,345

• Sep 4, 2016

• #7

LAST EDITED ON Sep-04-16 AT 11:17AM (MST)[p]LAST EDITED ON Sep-04-16 AT 11:16?AM (MST)

Redding makes a VLD seating stem. Works awesome for all bullets not just VLD. Also when you switch lots of bullets there will usually be minor dimension changes. This comes from the wear and tear on the dies used to swag bullets. They only last so long and then a new set is swapped in. Thus the reason I buy 500ct lots at a time.

Inconsistent Neck tension can also affect seating depth but in your case it's the new lot of bullets.

 

RELH

Long Time Member

Messages

17,479

• Sep 5, 2016

• #8

Most bullet seating stems will touch the bullet point while seating. Any difference in the bullet tip will throw off the seating depth.
A trick to get the bullet seating stem to contact only the ogive is to use a 1/8 drill and drill the center of the bullet seating die about 1/8 deep so the bullet tip will not make contact. Spitzer type bullets with a lead tip are the worse offenders for a difference in seating depth due to the lead tip being deformed.

RELH