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
Hunting
Long Range Hunting & Shooting
6MM ACKLEY OR 243 ACKLEY
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="budlight" data-source="post: 105900" data-attributes="member: 2939"><p>Wildcat - I'm building or should I say having built a 30 inch 1:8 twist 243 AI out of my 243 rem 700. I went with 243 because I have 500 some cases.</p><p></p><p>I was trying to find the article for you on the laws of barrel length diminishing returns. they start out the test with something like a 40 inch barrel and keep chopping it back down in inch increments and rechrono test.</p><p></p><p>What it really comes down to is: Lighter high speed bullets gain less speed from additional barrel length. The old assumption of 50 FPS per additional inch is not true. The greatest gains are going from 22 inches to say 26 inches. Going from 26 - 30 inches the gains are significatly less. </p><p></p><p>I'm using a 30 inch barrel because I plan on shooting the heaviest .243 bullets made 95% of the time and varmint lighter bullets 5% of the time.</p></blockquote><p></p>
[QUOTE="budlight, post: 105900, member: 2939"] Wildcat - I'm building or should I say having built a 30 inch 1:8 twist 243 AI out of my 243 rem 700. I went with 243 because I have 500 some cases. I was trying to find the article for you on the laws of barrel length diminishing returns. they start out the test with something like a 40 inch barrel and keep chopping it back down in inch increments and rechrono test. What it really comes down to is: Lighter high speed bullets gain less speed from additional barrel length. The old assumption of 50 FPS per additional inch is not true. The greatest gains are going from 22 inches to say 26 inches. Going from 26 - 30 inches the gains are significatly less. I'm using a 30 inch barrel because I plan on shooting the heaviest .243 bullets made 95% of the time and varmint lighter bullets 5% of the time. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Hunting
Long Range Hunting & Shooting
6MM ACKLEY OR 243 ACKLEY
Top