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Long Range Hunting & Shooting
Remington 700 Long Range 7mm Remington Magnum issues I
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<blockquote data-quote="LRRiflemanSNJ" data-source="post: 1076763" data-attributes="member: 87689"><p>I freely admit that I am new to magnum cartridges, but not to shooting or reloading. </p><p></p><p>I went to the range yesterday to zero my new Remington 700 Long Range in 7mm Remington Magnum, and had too many new experiences. The initial load that I created was well within Sierra's load recommendations. My goal was to develop a functional load for F class 1000 yard matches. </p><p></p><p>The load:</p><p>Bullet: Sierra 168gr MatchKing (.284)</p><p>Powder: 65.0 gr IMR7828</p><p>Primer: CCI 250 Magnum Large Rifle </p><p>Cases: 1 batch using once fired Winchester Western, 1 batch using Barnes, all rounds were once fired, but they were full length resized. </p><p></p><p>The Barnes brass loads chronographed at 2803 fps, the Winchester brassed loads chronographed at 2780 fps. Sierra's load recommendations would put this combination at about 2930 fps.</p><p></p><p>The major problem that I experienced was that the majority of the loads using the Winchester brass were difficult to extract after firing. None of the cartridges exhibited signs of excessive pressure, other than the difficult extraction. </p><p></p><p>I suspect that the lower velocities are due to insufficient crimping, but I am at a loss about the difficult extraction. The bore and chamber were thoroughly cleaned before the range session. </p><p></p><p>Thank you in advance for any and all constructive advice! gun)</p></blockquote><p></p>
[QUOTE="LRRiflemanSNJ, post: 1076763, member: 87689"] I freely admit that I am new to magnum cartridges, but not to shooting or reloading. I went to the range yesterday to zero my new Remington 700 Long Range in 7mm Remington Magnum, and had too many new experiences. The initial load that I created was well within Sierra's load recommendations. My goal was to develop a functional load for F class 1000 yard matches. The load: Bullet: Sierra 168gr MatchKing (.284) Powder: 65.0 gr IMR7828 Primer: CCI 250 Magnum Large Rifle Cases: 1 batch using once fired Winchester Western, 1 batch using Barnes, all rounds were once fired, but they were full length resized. The Barnes brass loads chronographed at 2803 fps, the Winchester brassed loads chronographed at 2780 fps. Sierra's load recommendations would put this combination at about 2930 fps. The major problem that I experienced was that the majority of the loads using the Winchester brass were difficult to extract after firing. None of the cartridges exhibited signs of excessive pressure, other than the difficult extraction. I suspect that the lower velocities are due to insufficient crimping, but I am at a loss about the difficult extraction. The bore and chamber were thoroughly cleaned before the range session. Thank you in advance for any and all constructive advice! gun) [/QUOTE]
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