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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6,5 Creedmoor selection of barrel length
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<blockquote data-quote="Sledhead406" data-source="post: 1890358" data-attributes="member: 108747"><p>This rifle is a Weatherby Vanguard Weatherguard with 20" barrel, suppressed with an 8" can. New Hornady brass that I had on hand- plan to redo a test when my Lapua brass gets here...someday...</p><p></p><p>The pressure test: 1 round at each charge weight up until hitting max pressure. So keep in mind this is a small sample size. Shot with a Magnetospeed for rough velocity information. Book Max is 41.5g of H4350, I tested higher than that and can say youre not going to get the velocity youre looking for. This barrel does appear a bit slower than other 20" barrels though. With different powders you could probably better velocities.</p><p></p><p>The 140 ELDM at 42gr H4350 was at 2558fps, the 147 at 42gr was at 2541fps. I did hit 2607 with the 140 and 2592 with the 147, but that was definitely max.</p><p></p><p>Have you considered 7mm08 or 308? The 150 ELDX in 7mm08 should get you where you need to be for energy, and the 308 will too with the 168gr easily. </p><p></p><p>I have rifles chambered for all three cartridges and when it comes to hunting, the 7mm08 Tikka is the most used by far.</p></blockquote><p></p>
[QUOTE="Sledhead406, post: 1890358, member: 108747"] This rifle is a Weatherby Vanguard Weatherguard with 20" barrel, suppressed with an 8" can. New Hornady brass that I had on hand- plan to redo a test when my Lapua brass gets here...someday... The pressure test: 1 round at each charge weight up until hitting max pressure. So keep in mind this is a small sample size. Shot with a Magnetospeed for rough velocity information. Book Max is 41.5g of H4350, I tested higher than that and can say youre not going to get the velocity youre looking for. This barrel does appear a bit slower than other 20" barrels though. With different powders you could probably better velocities. The 140 ELDM at 42gr H4350 was at 2558fps, the 147 at 42gr was at 2541fps. I did hit 2607 with the 140 and 2592 with the 147, but that was definitely max. Have you considered 7mm08 or 308? The 150 ELDX in 7mm08 should get you where you need to be for energy, and the 308 will too with the 168gr easily. I have rifles chambered for all three cartridges and when it comes to hunting, the 7mm08 Tikka is the most used by far. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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6,5 Creedmoor selection of barrel length
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