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
What am I doing wrong?
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="ASP785" data-source="post: 2567213" data-attributes="member: 12170"><p>Here's the reason I ask, powder charge is but a small part in reloading accuracy. Neck tension and primer pocket uniformity play as big or bigger part in the accuracy of reloaded rounds as the powder charge. Crimping can affect the neck tension and thus the velocity of your reloaded rounds. Sometimes if there is not proper neck tension, the bullets may set back in the cartridge when they are chambered and then velocity will be all over the board. COAL should actually vary if measured from the cartridge head to the tip of the bullet. If you measure from the case head to the bullet's ogive, the distance between loaded rounds here should be about .001" or so with quality bullets (SMK). A chronograph will help you narrow down whether the problem is with your rounds or with your gear. If your rounds are consistently shooting a narrow velocity and your ES and SD are fairly tight, that gives you an indicator that the problem is elsewhere. Interestedly though, just because you find a round with a small ES and SD, that doesnt instantly indicate that it will be accurate. Without some more data, which a chronograph could provide, everything is just a guess.</p></blockquote><p></p>
[QUOTE="ASP785, post: 2567213, member: 12170"] Here's the reason I ask, powder charge is but a small part in reloading accuracy. Neck tension and primer pocket uniformity play as big or bigger part in the accuracy of reloaded rounds as the powder charge. Crimping can affect the neck tension and thus the velocity of your reloaded rounds. Sometimes if there is not proper neck tension, the bullets may set back in the cartridge when they are chambered and then velocity will be all over the board. COAL should actually vary if measured from the cartridge head to the tip of the bullet. If you measure from the case head to the bullet's ogive, the distance between loaded rounds here should be about .001" or so with quality bullets (SMK). A chronograph will help you narrow down whether the problem is with your rounds or with your gear. If your rounds are consistently shooting a narrow velocity and your ES and SD are fairly tight, that gives you an indicator that the problem is elsewhere. Interestedly though, just because you find a round with a small ES and SD, that doesnt instantly indicate that it will be accurate. Without some more data, which a chronograph could provide, everything is just a guess. [/QUOTE]
Insert Quotes…
Verification
Post Reply
Forums
The Range
Ammo & Reloading
What am I doing wrong?
Search titles only
By:
Top
Bottom