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
Erratic pressure signs on previously safe load
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="Doodle" data-source="post: 2307704" data-attributes="member: 98051"><p>Hi Guys,</p><p></p><p>I've got a load for my 300 wsm consisting of Norma brass, fed 215, 64.5 grains imr 4064, and a 124 hammer. Load clocks about 3700fps, produces sub moa groups, and has not exhibited pressure signs before.</p><p></p><p>I gave the rifle a light cleaning before taking it to idaho this Friday, and after doing so I'm getting erratic pressure signs. The first shot fired had a nice swipe and a flattened primer, which I chalked up to not getting all the clp out. Then the weirdness started: shots would randomly show pressure on 2 out of 3 rounds. Some were fine, others had a swipe.</p><p></p><p>Brass is from the same lot, all 1x fired (this was the second firing), primers from the same lot, powder from the same can, bullets from the same package. Temperature difference between no pressure and erratic pressure was about 15 degrees (65 and 80, in the shade both times). Charges were double weighed. I also checked the chamber to see if I got a little oil in there but it seems to be dry.</p><p></p><p>I don't really have time to work up a new load before leaving, so I have a two-fold question: 1) what do you think may be causing the pressure? And 2) with hammers, can I just back off a grain and more or less expect decent groups? I have time for one more trip to the range before I leave, so I'm in a bit of a tight spot.</p><p></p><p>Thanks in advance for the help.</p></blockquote><p></p>
[QUOTE="Doodle, post: 2307704, member: 98051"] Hi Guys, I’ve got a load for my 300 wsm consisting of Norma brass, fed 215, 64.5 grains imr 4064, and a 124 hammer. Load clocks about 3700fps, produces sub moa groups, and has not exhibited pressure signs before. I gave the rifle a light cleaning before taking it to idaho this Friday, and after doing so I’m getting erratic pressure signs. The first shot fired had a nice swipe and a flattened primer, which I chalked up to not getting all the clp out. Then the weirdness started: shots would randomly show pressure on 2 out of 3 rounds. Some were fine, others had a swipe. Brass is from the same lot, all 1x fired (this was the second firing), primers from the same lot, powder from the same can, bullets from the same package. Temperature difference between no pressure and erratic pressure was about 15 degrees (65 and 80, in the shade both times). Charges were double weighed. I also checked the chamber to see if I got a little oil in there but it seems to be dry. I don’t really have time to work up a new load before leaving, so I have a two-fold question: 1) what do you think may be causing the pressure? And 2) with hammers, can I just back off a grain and more or less expect decent groups? I have time for one more trip to the range before I leave, so I’m in a bit of a tight spot. Thanks in advance for the help. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Erratic pressure signs on previously safe load
Top