Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Finding Max OAL for specific bullets
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
.
Reply to thread
Message
<blockquote data-quote="Bodywerks" data-source="post: 859582" data-attributes="member: 62694"><p>Measuring to the tip is the least accurate way to load precision rounds. But if you take that one bullet that you used to measure your oal to set up your seating die(assuming your seater is the competition ogive type) then you'll be fine. But you have to understand that, discounting any account for throat erosion, your oal to the lands of your rifling will be the same for any bullet, be it a long nose vld bullet or a soft point hunting bullet. This is why precision reloaders choose to measure to the ogive, which is the part of the bullet that contacts the lands of your rifling.</p><p>To answer your question. Seating depth is important and different for each type of bullet. Some like to be jammed into the lands and some like a little jump. It is important to measure ogive length of a loaded round to ensure the jump distance is consistent. This is good for the bullet but also ensures that the pressure spike occurs at the same point as the powder burns. If you were measuring oal from the tip of the bullet then the jump would be inconsistent, meaning the pressure spike would be inconsistent, causing velocity to be inconsistent, causing accuracy to suffer.</p><p>Consistency of pressure is key. It is the reason that neck tension consistency is so important also, along with case capacity, charge weight, etc.</p></blockquote><p></p>
[QUOTE="Bodywerks, post: 859582, member: 62694"] Measuring to the tip is the least accurate way to load precision rounds. But if you take that one bullet that you used to measure your oal to set up your seating die(assuming your seater is the competition ogive type) then you'll be fine. But you have to understand that, discounting any account for throat erosion, your oal to the lands of your rifling will be the same for any bullet, be it a long nose vld bullet or a soft point hunting bullet. This is why precision reloaders choose to measure to the ogive, which is the part of the bullet that contacts the lands of your rifling. To answer your question. Seating depth is important and different for each type of bullet. Some like to be jammed into the lands and some like a little jump. It is important to measure ogive length of a loaded round to ensure the jump distance is consistent. This is good for the bullet but also ensures that the pressure spike occurs at the same point as the powder burns. If you were measuring oal from the tip of the bullet then the jump would be inconsistent, meaning the pressure spike would be inconsistent, causing velocity to be inconsistent, causing accuracy to suffer. Consistency of pressure is key. It is the reason that neck tension consistency is so important also, along with case capacity, charge weight, etc. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Finding Max OAL for specific bullets
Top