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
Gunsmithing
280AI question
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="shortgrass" data-source="post: 1995281" data-attributes="member: 24284"><p>A good part of your problem is you are mixing gauges. If you are gonna' use a .280AI "GO" gauge you should be using a .280AI "NO-Go" gauge, not the "go" gauge for the .280 Remington as the "No-Go".. You shouldn't only remove the plunger style ejector and spring, you should be removing the firing pin assembly, too. Gauging headspace requires a light touch, and that can't happen with the bolt not stripped. The only part you can leave in is the extractor, and the gauge should be hooked under the extractor before inserting it into the chamber. In my personal .280 AI (SAAMI/Nosler) I get no crush fit on .280 Rem., so I firmly jam the bullet to fire form,,,,,,, and my .280AI gauges at "GO" plus .001" using a SAAMI/Nosler "Go" gauge (with steel shim to measure how far from "Go" I am). The barrel you bought is most likely the SAAMI/Nosler, but I would check with the seller to be certain. The idea behind fire forming Ackley Improved cartridges is to 'trap' the parent case between the bolt face and the neck/shoulder junction in the barrel with 'crush fit'. Doing it that way insures that the case stretch at the front to fill the chamber, instead of just in front of the head, which is NOT where you'd want the brass thin. If the "crush fit" of the case can not be accomplished, even though the chamber gauges correctly, a solid jam of the bullet usually works well. I use a "middle of the road" load to fire form with, and that fully forms the Ackley case.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 1995281, member: 24284"] A good part of your problem is you are mixing gauges. If you are gonna' use a .280AI "GO" gauge you should be using a .280AI "NO-Go" gauge, not the "go" gauge for the .280 Remington as the "No-Go".. You shouldn't only remove the plunger style ejector and spring, you should be removing the firing pin assembly, too. Gauging headspace requires a light touch, and that can't happen with the bolt not stripped. The only part you can leave in is the extractor, and the gauge should be hooked under the extractor before inserting it into the chamber. In my personal .280 AI (SAAMI/Nosler) I get no crush fit on .280 Rem., so I firmly jam the bullet to fire form,,,,,,, and my .280AI gauges at "GO" plus .001" using a SAAMI/Nosler "Go" gauge (with steel shim to measure how far from "Go" I am). The barrel you bought is most likely the SAAMI/Nosler, but I would check with the seller to be certain. The idea behind fire forming Ackley Improved cartridges is to 'trap' the parent case between the bolt face and the neck/shoulder junction in the barrel with 'crush fit'. Doing it that way insures that the case stretch at the front to fill the chamber, instead of just in front of the head, which is NOT where you'd want the brass thin. If the "crush fit" of the case can not be accomplished, even though the chamber gauges correctly, a solid jam of the bullet usually works well. I use a "middle of the road" load to fire form with, and that fully forms the Ackley case. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Gunsmithing
280AI question
Top