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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6.5-7 PRC vs 6.5-300 PRC
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<blockquote data-quote="SteveBurton" data-source="post: 3047910" data-attributes="member: 59541"><p>I've been kicking around ideas for my next build and I wanted to build a 6.5-7 PRC with a shorter barrel, around 20-22", and shoot Berger 156 EOLs. Then I was thinking, why not add some more displacement and do a 6.5 300 PRC? I already know that the more powder you burn down a barrel the shorter it's life will be so there is no need to rehash that argument. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> I grabbed some info from the 'internets' about approximate case capacity which I've listed below.</p><p></p><p>6.5 PRC - 68 grs</p><p>7 PRC - 73 grs</p><p>300 PRC - 77 grs</p><p>264 Win Mag - 82 grs</p><p>26 Nosler - 93 grs</p><p></p><p>I've read were <em>Scottw2119</em> was getting 3200-3300 fps with the 156 EOL out of a 6.5-7 PRC and I think I remember <em>elkaholic </em>saying a customer was getting 3500 fps + out of a 30SM necked down to 6.5. I'm assuming they were using 24"+ barrels. Both of those cases are well below the 264 Win Mag and 26 Nosler in the amount of powder burned and are outperforming them as well. I guess my biggest question is, at what point do you reach diminishing returns in case capacity in relation to speed? Will I be able to find a suitable powder to use in a 20-22" barrel without having a flame thrower? I'm just thinking of ways to add more speed to overcome the shorter barrel length.</p><p>Does anyone have any experience with either or both? TIA</p></blockquote><p></p>
[QUOTE="SteveBurton, post: 3047910, member: 59541"] I've been kicking around ideas for my next build and I wanted to build a 6.5-7 PRC with a shorter barrel, around 20-22", and shoot Berger 156 EOLs. Then I was thinking, why not add some more displacement and do a 6.5 300 PRC? I already know that the more powder you burn down a barrel the shorter it's life will be so there is no need to rehash that argument. ;) I grabbed some info from the 'internets' about approximate case capacity which I've listed below. 6.5 PRC - 68 grs 7 PRC - 73 grs 300 PRC - 77 grs 264 Win Mag - 82 grs 26 Nosler - 93 grs I've read were [I]Scottw2119[/I] was getting 3200-3300 fps with the 156 EOL out of a 6.5-7 PRC and I think I remember [I]elkaholic [/I]saying a customer was getting 3500 fps + out of a 30SM necked down to 6.5. I'm assuming they were using 24"+ barrels. Both of those cases are well below the 264 Win Mag and 26 Nosler in the amount of powder burned and are outperforming them as well. I guess my biggest question is, at what point do you reach diminishing returns in case capacity in relation to speed? Will I be able to find a suitable powder to use in a 20-22" barrel without having a flame thrower? I'm just thinking of ways to add more speed to overcome the shorter barrel length. Does anyone have any experience with either or both? TIA [/QUOTE]
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6.5-7 PRC vs 6.5-300 PRC
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