Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Classifieds
Media
New media
New comments
Search media
Log in
Register
What's New?
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Navigation
Install the app
Install
More Options
Advertise with us
Contact Us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
The Range
Ammo & Reloading
Berger vld's
Search titles only
By:
Reply to Thread
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="abinok" data-source="post: 912215" data-attributes="member: 6346"><p>The short answer is that you seat a bullet in an empty case, chamber it, and then measure what the length is... theoreatically getting what is known as the "bullet jam" length. In reality case neck tension will play a role in what that length actually is by how much contact you will have with the lands, and how much pressure is required to overcome the neck tension.</p><p>Jam will be longer on a case with .003" than it will be on one setup for .001 neck tension.</p><p></p><p>In your initial post your mentioned the suggestion to "paint" the bullet... this is the intended measurement, though most use a magic marker...</p><p></p><p>shoot me a pm... ive got a couple of books you will want to have a look at...</p><p></p><p>CoyoteKid, I would be interested to hear your theory that by seating bullets .010" shorter you are having any effect at all on throat erosion. While I agree that some guns will shoot well at .010" off, the majority will like more contact, especially when you get past a 7 or 8 caliber secant ogive. Its primarily an issue of bearing surface.</p><p>I assume you are shooting 180s?</p><p>Id love to hear more about your setup... Im glad to see more folks in OK shooting to a mile and beyond. Theres a couple of guys in the el reno area that do, as well as a few others scattered around. I can only shoot to 2170yds here at the house without having a spotter to verify the absence of cars on a county road in the area. My current load is supersonic to 2600ish... one of these days...</p></blockquote><p></p>
[QUOTE="abinok, post: 912215, member: 6346"] The short answer is that you seat a bullet in an empty case, chamber it, and then measure what the length is... theoreatically getting what is known as the "bullet jam" length. In reality case neck tension will play a role in what that length actually is by how much contact you will have with the lands, and how much pressure is required to overcome the neck tension. Jam will be longer on a case with .003" than it will be on one setup for .001 neck tension. In your initial post your mentioned the suggestion to "paint" the bullet... this is the intended measurement, though most use a magic marker... shoot me a pm... ive got a couple of books you will want to have a look at... CoyoteKid, I would be interested to hear your theory that by seating bullets .010" shorter you are having any effect at all on throat erosion. While I agree that some guns will shoot well at .010" off, the majority will like more contact, especially when you get past a 7 or 8 caliber secant ogive. Its primarily an issue of bearing surface. I assume you are shooting 180s? Id love to hear more about your setup... Im glad to see more folks in OK shooting to a mile and beyond. Theres a couple of guys in the el reno area that do, as well as a few others scattered around. I can only shoot to 2170yds here at the house without having a spotter to verify the absence of cars on a county road in the area. My current load is supersonic to 2600ish... one of these days... [/QUOTE]
Insert Quotes…
Verification
Post Reply
Forums
The Range
Ammo & Reloading
Berger vld's
Search titles only
By:
Top
Bottom