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
Rifles, Bullets, Barrels & Ballistics
35 Whelen questions
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="J E Custom" data-source="post: 1272853" data-attributes="member: 2736"><p>The AI is not just for powder capacity. P O Ackley experimented with many cartridges and there design and tried to improve on there performance at the time and with the available powders.</p><p></p><p>Efficiency was most important to him and his experiments were tailored to increase velocity through design. Some of the things he found was that less case body taper lowered bolt thrust loads and the 40o shoulder was optimum (Less was not as efficient and more gained you nothing except difficulty</p><p>in feeding.</p><p></p><p>Some AIs are more or less efficient than others because of the powders and case shape even with the same case volume. At the time, brass life was not an issue like it is now even though it did improved brass life that was not his goal.</p><p></p><p>One of the most efficient cases found was the 30/06 based cases. they seem to perform better than they should. An example is the 280 AI, it can meet or exceed the velocities of its big brother, the 7 rem mag with less powder. </p><p></p><p>like Rich, I base all of my wildcats on the Ackley design principles because they work when correctly applied. even when they are hugely over bored cartridges with the goal of high velocity and low pressures.</p><p></p><p>So in my opinion, doing an AI is more for total performance than case capacity. It also allows you to load mag length ammo without having to single load or long throat to gain velocity.</p><p></p><p>As far as I am concerned, you give up nothing and can only gain total Performance.</p><p></p><p>Just My Opinion</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1272853, member: 2736"] The AI is not just for powder capacity. P O Ackley experimented with many cartridges and there design and tried to improve on there performance at the time and with the available powders. Efficiency was most important to him and his experiments were tailored to increase velocity through design. Some of the things he found was that less case body taper lowered bolt thrust loads and the 40o shoulder was optimum (Less was not as efficient and more gained you nothing except difficulty in feeding. Some AIs are more or less efficient than others because of the powders and case shape even with the same case volume. At the time, brass life was not an issue like it is now even though it did improved brass life that was not his goal. One of the most efficient cases found was the 30/06 based cases. they seem to perform better than they should. An example is the 280 AI, it can meet or exceed the velocities of its big brother, the 7 rem mag with less powder. like Rich, I base all of my wildcats on the Ackley design principles because they work when correctly applied. even when they are hugely over bored cartridges with the goal of high velocity and low pressures. So in my opinion, doing an AI is more for total performance than case capacity. It also allows you to load mag length ammo without having to single load or long throat to gain velocity. As far as I am concerned, you give up nothing and can only gain total Performance. Just My Opinion J E CUSTOM [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
35 Whelen questions
Top