Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Berger Bullets


COAL Work with me here please

LinkBack Thread Tools Display Modes
Unread 04-10-2006, 08:47 PM
Junior Member
Join Date: Nov 2005
Posts: 15
COAL Work with me here please

Just a thought, as I'm fairly new to reloading (loaded and fired, maybe 500 rounds total now, with mixed results).

When seating bullets, I've noticed many seat at a slightly different COAL than one another. In the past I have adjusted the die for each and every cartrige, to make the COAL as close for each round as possible. but I began to think, this would, in actuality, make the distance from bullet to lands vary moreso than if I let the COAL vary from round to round, because the part of the seating die that touches the bullet is close in diameter to the diameter of the barrel/lands, and thus, the LENGTH of the round varies from bullet to bullet becaus of discrepencies in the ogives of each bullet; therefore letting the COAL vary slightly may do MORE to achieve a uniform DISTANCE FROM LANDS.

Reply With Quote

Unread 04-10-2006, 09:12 PM
Platinum Member
Join Date: Jan 2004
Location: Blackfoot, Idaho
Posts: 8,876
Re: COAL Work with me here please

The way that I look at it is that bullet length usually isn't uniform and doesn't make "that much" difference.

However, the distance seated from the rifling makes much difference.

The trick is sort bullets by distance from base to Cal. diameter on ogive. Or by surface bearing length.

Then seating die setting remains constant for any given length of bearing surface.

This is pretty poorly explained but you may catch my drift.

There are simple tools that are used to make these measurements.
I may be the slowest guy on the mountain . . . . but . . . . I'm on the mountain!
Reply With Quote
Unread 04-11-2006, 04:43 AM
Platinum Member
Join Date: Nov 2005
Location: Maryland
Posts: 1,049
Re: COAL Work with me here please

I agree with Roy. You cannot measure the COAL of loaded rounds by measuring to the tip of the bullet. Bullets vary in length far to much. You must measure to the ogive.
Reply With Quote


Thread Tools
Display Modes

Similar Threads for: COAL Work with me here please
Thread Thread Starter Forum Replies Last Post
7 wsm coal Ryan55555 Long Range Hunting & Shooting 3 12-17-2010 10:56 PM
COAL help yzm19 Reloading 6 07-08-2009 07:17 PM
300 rum coal MontanaRifleman Rifles, Bullets, Barrels & Ballistics 0 06-27-2009 01:25 AM
COAL vs OAL Steve7mm08 Reloading 2 05-02-2009 03:15 PM
300 rum coal outdooraddict Reloading 6 09-12-2008 08:37 PM

All times are GMT -5. The time now is 07:45 AM.

All content ©2010-2015 Long Range Hunting, LLC