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
The Fast And Accurate Absolute Hammer 🔥🎯
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="codyadams" data-source="post: 2722489" data-attributes="member: 87243"><p>Just the other day my buddy and I went through 40 rounds factory hornady 6 arc in his ar to make some brass for loading, and not a single ejector mark on any of them. That also doesn't explain the primer craters. Those are not minor ejector marks either. Pressure signs are pressure signs, it doesn't really matter what the chamber dimensions are. You can hide pressure signs with less body taper and steeper shoulders, but that only means you are even higher pressure when signs show up. And if your at 2900, then he is pretty much 300 fps faster than you, not 200. Data shows 2750 in a 18.5" gas gun from hornady, add about 40-60 fps for a 20", then add another 100fps or so for the absolute bullet, and you are about right. </p><p></p><p>The 450 primers are not as flattened because, as zen stated, they have thicker cups, the same reason they didn't get pierced, so it takes more pressure to flatten them. The same reason winchester primers will often look flat as a pancake with standard loads, the material they use flattens easier. The 450's are still showing craters though, even with the tougher cup. That alone CAN be from needing the fireing pin bushed, but when coupled with the obvious ejector mark, and the 300+ fps over published data (I know these bullets get more velocity than is standard, but this is significant) kind of tells what is going on.</p><p></p><p>I respect you Zen, and enjoy your content, this is not a dig on you in any way brother, so I hope you don't take it that way. But please be safe.</p></blockquote><p></p>
[QUOTE="codyadams, post: 2722489, member: 87243"] Just the other day my buddy and I went through 40 rounds factory hornady 6 arc in his ar to make some brass for loading, and not a single ejector mark on any of them. That also doesn't explain the primer craters. Those are not minor ejector marks either. Pressure signs are pressure signs, it doesn't really matter what the chamber dimensions are. You can hide pressure signs with less body taper and steeper shoulders, but that only means you are even higher pressure when signs show up. And if your at 2900, then he is pretty much 300 fps faster than you, not 200. Data shows 2750 in a 18.5" gas gun from hornady, add about 40-60 fps for a 20", then add another 100fps or so for the absolute bullet, and you are about right. The 450 primers are not as flattened because, as zen stated, they have thicker cups, the same reason they didn't get pierced, so it takes more pressure to flatten them. The same reason winchester primers will often look flat as a pancake with standard loads, the material they use flattens easier. The 450's are still showing craters though, even with the tougher cup. That alone CAN be from needing the fireing pin bushed, but when coupled with the obvious ejector mark, and the 300+ fps over published data (I know these bullets get more velocity than is standard, but this is significant) kind of tells what is going on. I respect you Zen, and enjoy your content, this is not a dig on you in any way brother, so I hope you don't take it that way. But please be safe. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
The Fast And Accurate Absolute Hammer 🔥🎯
Top