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Long Range Hunting & Shooting
300wsm vs 7wsm
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<blockquote data-quote="liltank" data-source="post: 323368" data-attributes="member: 13275"><p>MR,</p><p>How many rounds do expect out of a 7WSM? The SAUM has a 30 degree shoulder verses the 35 degree shoulder. The SAUM has a 7% to 11% volume decrease with to the WSM, but due to the shoulder and case design, it is supposed to be more efficient only falling about 10fps slower. It has a longer neck which according to bench rest shooters say it is a better design for shooting the heavier high BC bullets. This is why some guys are going to the 7mm-300WSM. This allows a person to use less powder because the 300WSM has a longer neck and less powder capacity. A gentleman in the UK shot some 1000yrd records using this case which makes me think I want to try it also. He was able to attain velocities of 3050 using a 180grn Berger VLD. I am sold on the 7mm, it is just picking the right casing to achieve what I want.</p><p></p><p>As far as brass is concerned I have Norma and Winchester. My cousin uses Nosler in .308. We found both Norma and Nosler to both be a little soft for high pressure loadings. Mine had some ejector marks and loose primer pockets, but they still hold the primers. His Nosler completely drop the primers out, but it is very consistant as advertised. Using normal loads and not over pressuring them would result in good firings. The Norma has been good for necks though. None have cracked yet and I have about 15 firings on them.</p><p></p><p>Tank</p></blockquote><p></p>
[QUOTE="liltank, post: 323368, member: 13275"] MR, How many rounds do expect out of a 7WSM? The SAUM has a 30 degree shoulder verses the 35 degree shoulder. The SAUM has a 7% to 11% volume decrease with to the WSM, but due to the shoulder and case design, it is supposed to be more efficient only falling about 10fps slower. It has a longer neck which according to bench rest shooters say it is a better design for shooting the heavier high BC bullets. This is why some guys are going to the 7mm-300WSM. This allows a person to use less powder because the 300WSM has a longer neck and less powder capacity. A gentleman in the UK shot some 1000yrd records using this case which makes me think I want to try it also. He was able to attain velocities of 3050 using a 180grn Berger VLD. I am sold on the 7mm, it is just picking the right casing to achieve what I want. As far as brass is concerned I have Norma and Winchester. My cousin uses Nosler in .308. We found both Norma and Nosler to both be a little soft for high pressure loadings. Mine had some ejector marks and loose primer pockets, but they still hold the primers. His Nosler completely drop the primers out, but it is very consistant as advertised. Using normal loads and not over pressuring them would result in good firings. The Norma has been good for necks though. None have cracked yet and I have about 15 firings on them. Tank [/QUOTE]
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300wsm vs 7wsm
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