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
COAL and pressure signs
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="LoneTraveler" data-source="post: 1045796" data-attributes="member: 77249"><p>C.O.A.L. is just a measurement used to make sure shells will work through the magazine of a rifle. The distance from bore diameter on the bullet ogive to the lands of the rifles bore are what changes pressure quick. If the second rifle is a custom built rifle or a different manufacture may be the difference. If it is a custom rifle the gunsmith may have used a chamber reamer with a long throat to allow bullets to be seated till the bullet base is even with the bottom of the neck, And allowing a longer jump to the lands to keep pressure down in reason. The amount of free bore jump to the rifling can radically change pressure. Good Luck and Happy Reloading.</p></blockquote><p></p>
[QUOTE="LoneTraveler, post: 1045796, member: 77249"] C.O.A.L. is just a measurement used to make sure shells will work through the magazine of a rifle. The distance from bore diameter on the bullet ogive to the lands of the rifles bore are what changes pressure quick. If the second rifle is a custom built rifle or a different manufacture may be the difference. If it is a custom rifle the gunsmith may have used a chamber reamer with a long throat to allow bullets to be seated till the bullet base is even with the bottom of the neck, And allowing a longer jump to the lands to keep pressure down in reason. The amount of free bore jump to the rifling can radically change pressure. Good Luck and Happy Reloading. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
COAL and pressure signs
Top