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
Never seen a primer do this before.....
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="bigedp51" data-source="post: 1704601" data-attributes="member: 28965"><p>You are using a small rifle primer with a cup thickness of less than .025, and possibly .019 in thickness, and a large rifle primer has a cup thickness of .027. Meaning as stated you need to change primers that have a thicker .025 thickness cup.</p><p></p><p>Below is a CCI 400 primer with a cup thickness of .020 that was fired in a AR15. If you have a firing pin on the long side and bump the case shoulder back too far the primer backs out of the primer pocket and the firing pin punches the center of the primer out. Meaning when the primer backs out after being hit the firing pin acts like a cookie cutter and pushes the center of the primer out.</p><p></p><p><img src="https://i.imgur.com/FP14bKZ.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><span style="color: #ff0000"><strong>So switch to thicker primers made for higher pressure cartridges and not thinner primers made for the lower pressure .22 Hornet. You are basically using a thinner pistol primer in a higher pressure rifle round.</strong></span></p><p></p><p>Read the link below.</p><p></p><p><strong>CHOOSING THE RIGHT PRIMER - A PRIMER ON PRIMERS</strong></p><p><strong><a href="http://www.sksboards.com/smf/index.php?topic=56422.0" target="_blank">http://www.sksboards.com/smf/index.php?topic=56422.0</a></strong></p><p><strong></strong></p><p><span style="color: #0000b3">"Cases that utilize small rifle primers and operate at moderate pressures(40,000 psi) should use CCI 400, Federal 200, Rem 6 1/2, or Win WSR. Such cases include 22 CCM, 22 Hornet and the 218 Bee. These primers can also used in handguns such as the 9mm., 357, etc. Other cases that use the small rifle primer can use the above primers only if moderate loads are used. Keep to the lower end of reloading recommendations.</span></p><p><span style="color: #0000b3">Cases that utilize Small Rifle primers and operate at higher pressures (55,000 psi) should use CCI 450, CCI BR4, Fed 205 and Rem 7 1/2 etc."</span></p><p><span style="color: #0000b3"></span></p><p><span style="color: #0000b3">"According to Speer/CCI Technical Services -<span style="color: #ff0000"> Both the CCI 550 Small Pistol Magnum and CCI 400 Small Rifle primers are identical in size. Both primers use the same cup metal and share the same cup thickness. </span>Both primers use the same primer compound formula and same amount of primer compound. They can be used interchangeably."</span></p></blockquote><p></p>
[QUOTE="bigedp51, post: 1704601, member: 28965"] You are using a small rifle primer with a cup thickness of less than .025, and possibly .019 in thickness, and a large rifle primer has a cup thickness of .027. Meaning as stated you need to change primers that have a thicker .025 thickness cup. Below is a CCI 400 primer with a cup thickness of .020 that was fired in a AR15. If you have a firing pin on the long side and bump the case shoulder back too far the primer backs out of the primer pocket and the firing pin punches the center of the primer out. Meaning when the primer backs out after being hit the firing pin acts like a cookie cutter and pushes the center of the primer out. [IMG]https://i.imgur.com/FP14bKZ.jpg[/IMG] [COLOR=#ff0000][B]So switch to thicker primers made for higher pressure cartridges and not thinner primers made for the lower pressure .22 Hornet. You are basically using a thinner pistol primer in a higher pressure rifle round.[/B][/COLOR] Read the link below. [B]CHOOSING THE RIGHT PRIMER - A PRIMER ON PRIMERS [URL]http://www.sksboards.com/smf/index.php?topic=56422.0[/URL] [/B] [COLOR=#0000b3]"Cases that utilize small rifle primers and operate at moderate pressures(40,000 psi) should use CCI 400, Federal 200, Rem 6 1/2, or Win WSR. Such cases include 22 CCM, 22 Hornet and the 218 Bee. These primers can also used in handguns such as the 9mm., 357, etc. Other cases that use the small rifle primer can use the above primers only if moderate loads are used. Keep to the lower end of reloading recommendations. Cases that utilize Small Rifle primers and operate at higher pressures (55,000 psi) should use CCI 450, CCI BR4, Fed 205 and Rem 7 1/2 etc." "According to Speer/CCI Technical Services -[COLOR=#ff0000] Both the CCI 550 Small Pistol Magnum and CCI 400 Small Rifle primers are identical in size. Both primers use the same cup metal and share the same cup thickness. [/COLOR]Both primers use the same primer compound formula and same amount of primer compound. They can be used interchangeably."[/COLOR] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Never seen a primer do this before.....
Top