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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Blew a Primer _ Analysis
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<blockquote data-quote="elkaholic" data-source="post: 1391074" data-attributes="member: 13833"><p>I had posted earlier that I had a very similar experience as Paul last fall and wanted to check the load again and see if I had the same result. The weather was very similar as when the situation took place last fall, and I had the same box of ammo sitting at the same temp and moisture condition, which was around 40 degrees with high humidity.</p><p>I thought it would be a good opportunity to check out the converted 8x68S RWS brass at the same time to make a comparison and also get some needed data for the possibility of being able to use it for the 30/375 S.I.</p><p>I have included 2 pics to illustrate the process of forming the brass and the result of firing the brass. </p><p>I used the same lot of powder and primer stored at 40 degrees with the brass so that conditions would be as close as I could come to the fall incident. The rifle was also cooled to the 40 degree ambient. </p><p>The load was 82 grs. N570, WW Mag primer, and 225 ELD. The RWS brass holds about 2 grains less powder, so more pressure was undoubtedly created than in the Hornady brass.</p><p>The pic of the 3 fired cases shows (1) the Hornady fired last fall (primer missing and extractor mark) the case expanded to .5325" at the web. (2) the same exact load fired today from the same lot (primer still in pocket but very flat) with the same case head expansion of .5325" (3) RWS 8x68 loaded with same exact load and component lots. Primer normal for a full pressure load, case head measured .5311". with no sings of over pressure! All of the brass was once fired with a full load prior to the test.</p><p>Just to verify things beyond a doubt; I fired the same load in the RWS brass 3 more times (4) total, and the web still measured just over .531" with a good tight primer pocket.</p><p>I realize that the only thing that this proves with certainty is that RWS brass is FAR</p><p> more tough than Hornady, which we all knew, but I think the case for Hornady brass being the culprit is growing pretty strong!</p><p>[ATTACH=full]88731[/ATTACH] [ATTACH=full]88732[/ATTACH]</p></blockquote><p></p>
[QUOTE="elkaholic, post: 1391074, member: 13833"] I had posted earlier that I had a very similar experience as Paul last fall and wanted to check the load again and see if I had the same result. The weather was very similar as when the situation took place last fall, and I had the same box of ammo sitting at the same temp and moisture condition, which was around 40 degrees with high humidity. I thought it would be a good opportunity to check out the converted 8x68S RWS brass at the same time to make a comparison and also get some needed data for the possibility of being able to use it for the 30/375 S.I. I have included 2 pics to illustrate the process of forming the brass and the result of firing the brass. I used the same lot of powder and primer stored at 40 degrees with the brass so that conditions would be as close as I could come to the fall incident. The rifle was also cooled to the 40 degree ambient. The load was 82 grs. N570, WW Mag primer, and 225 ELD. The RWS brass holds about 2 grains less powder, so more pressure was undoubtedly created than in the Hornady brass. The pic of the 3 fired cases shows (1) the Hornady fired last fall (primer missing and extractor mark) the case expanded to .5325" at the web. (2) the same exact load fired today from the same lot (primer still in pocket but very flat) with the same case head expansion of .5325" (3) RWS 8x68 loaded with same exact load and component lots. Primer normal for a full pressure load, case head measured .5311". with no sings of over pressure! All of the brass was once fired with a full load prior to the test. Just to verify things beyond a doubt; I fired the same load in the RWS brass 3 more times (4) total, and the web still measured just over .531" with a good tight primer pocket. I realize that the only thing that this proves with certainty is that RWS brass is FAR more tough than Hornady, which we all knew, but I think the case for Hornady brass being the culprit is growing pretty strong! [ATTACH=full]88731[/ATTACH] [ATTACH=full]88732[/ATTACH] [/QUOTE]
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Blew a Primer _ Analysis
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