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7mm PRC
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<blockquote data-quote="yorke-1" data-source="post: 1685644" data-attributes="member: 11960"><p>Hornady was playing with the 338 Hornady match (338 PRC) back in 2008, I have a copy of the reamer print. Hornady was working on the 300 HSM (PRC) back in 2009 I believe. The 300 RCM and 338 RCM came out around 2007 and 2008 respectively. Hornady has been necking that case up and down as well as shorter versions of it since before anyone outside the company knew it existed.</p><p></p><p></p><p></p><p>Yes, you can form functional 375 Ruger brass (and all the other related cases) from 8x68s cases but they're not an exact match.</p><p><img src="https://i.imgur.com/84aAbns.jpg?1" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>Left to right: RWS 8x68s case, 375 Ruger, 338/375 Ruger formed from 8x68s brass, 30 Sherman Mag from 375 Ruger brass, 6.5/375 Ruger and a 7mm LRM formed from 375 Ruger brass.</p><p></p><p>You can see the differences between the 8x68s brass and the 375 Ruger based cases. The 8x68s results in an undersized rim diameter which doesn't work with all standard .535" bolt faces. The case web is also undersized and is visible in the fire formed 338/375 Ruger case. The 8x68s cases are perfectly functional in many guns as long as the extractor will work. Or you can just use 375 Ruger brass and have the proper case dimensions without the need to fire form and have a greater internal case capacity. And to respond to the inevitable comment about the quality of Hornady brass, I've fired thousands of rounds through guns chambered in 375 Ruger based cartridges. I have over 1100 through my 375 Ruger, more than 2500 through various 338/375 Rugers, 500+ through a 6.5/375 Ruger, and 350+ through a 7mm/375 Ruger. All of this (with the exception of 100 rounds) was done with Hornady brass. I briefly played with the 8x68s case (both RWS and Norma) before deciding that it wasn't worth the effort. Hornady brass will hold up to pressures up to the 62K psi it was designed for and still hold up to 5+ firings. If you're losing primer pockets faster than that then you're operating outside the design parameters of the case and it's not the brass's fault that you're running up the pressures.</p></blockquote><p></p>
[QUOTE="yorke-1, post: 1685644, member: 11960"] Hornady was playing with the 338 Hornady match (338 PRC) back in 2008, I have a copy of the reamer print. Hornady was working on the 300 HSM (PRC) back in 2009 I believe. The 300 RCM and 338 RCM came out around 2007 and 2008 respectively. Hornady has been necking that case up and down as well as shorter versions of it since before anyone outside the company knew it existed. Yes, you can form functional 375 Ruger brass (and all the other related cases) from 8x68s cases but they're not an exact match. [IMG]https://i.imgur.com/84aAbns.jpg?1[/IMG] Left to right: RWS 8x68s case, 375 Ruger, 338/375 Ruger formed from 8x68s brass, 30 Sherman Mag from 375 Ruger brass, 6.5/375 Ruger and a 7mm LRM formed from 375 Ruger brass. You can see the differences between the 8x68s brass and the 375 Ruger based cases. The 8x68s results in an undersized rim diameter which doesn't work with all standard .535" bolt faces. The case web is also undersized and is visible in the fire formed 338/375 Ruger case. The 8x68s cases are perfectly functional in many guns as long as the extractor will work. Or you can just use 375 Ruger brass and have the proper case dimensions without the need to fire form and have a greater internal case capacity. And to respond to the inevitable comment about the quality of Hornady brass, I've fired thousands of rounds through guns chambered in 375 Ruger based cartridges. I have over 1100 through my 375 Ruger, more than 2500 through various 338/375 Rugers, 500+ through a 6.5/375 Ruger, and 350+ through a 7mm/375 Ruger. All of this (with the exception of 100 rounds) was done with Hornady brass. I briefly played with the 8x68s case (both RWS and Norma) before deciding that it wasn't worth the effort. Hornady brass will hold up to pressures up to the 62K psi it was designed for and still hold up to 5+ firings. If you're losing primer pockets faster than that then you're operating outside the design parameters of the case and it's not the brass's fault that you're running up the pressures. [/QUOTE]
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