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
Brass “break in” …
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="Mikecr" data-source="post: 2406557" data-attributes="member: 1521"><p>I don't know what 'top tier' means, and for sure it means nothing to me about brass hardness.</p><p>If by big game cartridges you mean big cartridges, then that desire works counter to lasting brass. It's not a dead hard barrier, but makes everything more difficult.</p><p></p><p>The root cause of brass killing (within SAAMI max pressures) is sizing.</p><p>Excess up-sizing with firing, and excess downsizing to re-chamber.</p><p>The force of a given firing pressure is tied to the area applied (PSI). So to move brass the least with pressure, you need minimal clearances to enough steel support around the area of chamber. To mitigate opening pockets and difficult extraction you need adequate breech support.</p><p>And while I talk clearances and support, I'm not talking about good enough for functioning. I'm talking about right for case longevity through many reload cycles. To get enough support often means heavier gun build, and in an excessively large cartridge, it could quickly go beyond practical field carry. >12lbs would compromise my hunting, so a 15lb+ big boomer is not in a plan for me.</p><p></p><p>Luckily, the most powerful of ballistic attributes -is accuracy. Long term, dependable accuracy.</p><p>In the USA, I can kill anything at 500yds with a 140gr Berger to the brain or heart. Best overall capacity for 26cal is 260AI, and I could make brass for that last forever in a 12lb system. Just an example of a kind of planning that begins with quality over quantity.</p><p>It all begins with a bullet, I think you're looking at 30cal. What's the smallest case/capacity needed to reach your actual ballistic need for the bullet? Maybe not as big as you think.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2406557, member: 1521"] I don't know what 'top tier' means, and for sure it means nothing to me about brass hardness. If by big game cartridges you mean big cartridges, then that desire works counter to lasting brass. It's not a dead hard barrier, but makes everything more difficult. The root cause of brass killing (within SAAMI max pressures) is sizing. Excess up-sizing with firing, and excess downsizing to re-chamber. The force of a given firing pressure is tied to the area applied (PSI). So to move brass the least with pressure, you need minimal clearances to enough steel support around the area of chamber. To mitigate opening pockets and difficult extraction you need adequate breech support. And while I talk clearances and support, I'm not talking about good enough for functioning. I'm talking about right for case longevity through many reload cycles. To get enough support often means heavier gun build, and in an excessively large cartridge, it could quickly go beyond practical field carry. >12lbs would compromise my hunting, so a 15lb+ big boomer is not in a plan for me. Luckily, the most powerful of ballistic attributes -is accuracy. Long term, dependable accuracy. In the USA, I can kill anything at 500yds with a 140gr Berger to the brain or heart. Best overall capacity for 26cal is 260AI, and I could make brass for that last forever in a 12lb system. Just an example of a kind of planning that begins with quality over quantity. It all begins with a bullet, I think you're looking at 30cal. What's the smallest case/capacity needed to reach your actual ballistic need for the bullet? Maybe not as big as you think. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Brass “break in” …
Top