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
Looking for insight on blown primers
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="dragon798" data-source="post: 2867903" data-attributes="member: 51909"><p>I am very curious as to the actual cause of your issues with the IMI ammo. I wonder if you have the ability to accurately take some measurements of the IMI and FGMM brass. I would like to know if there is a difference, particularly in cartridge base to shoulder distance. The "headspace" measurement of both cartridges. I'm also curious about measurements at the rim, the groove and the base of the cartridge. I feel that you may find a difference in the IMI ammo. It is possible that the IMI is slightly out of spec. Maybe the rim is just large enough that the extractor isn't completely snapping over, holding the bolt back a couple thousandths and creating a headspace issue. Maybe the cartridge base to datum line is short, again creating a headspace issue. You eliminated any headspace issue with the gun, what about the ammo? SAAMI dimensions are easy to find and you have a cartridge that doesn't have issues.</p></blockquote><p></p>
[QUOTE="dragon798, post: 2867903, member: 51909"] I am very curious as to the actual cause of your issues with the IMI ammo. I wonder if you have the ability to accurately take some measurements of the IMI and FGMM brass. I would like to know if there is a difference, particularly in cartridge base to shoulder distance. The "headspace" measurement of both cartridges. I'm also curious about measurements at the rim, the groove and the base of the cartridge. I feel that you may find a difference in the IMI ammo. It is possible that the IMI is slightly out of spec. Maybe the rim is just large enough that the extractor isn't completely snapping over, holding the bolt back a couple thousandths and creating a headspace issue. Maybe the cartridge base to datum line is short, again creating a headspace issue. You eliminated any headspace issue with the gun, what about the ammo? SAAMI dimensions are easy to find and you have a cartridge that doesn't have issues. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Looking for insight on blown primers
Top