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Hunting
Long Range Hunting & Shooting
7mm WSM or 7mm rem mag?
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<blockquote data-quote="3006savage" data-source="post: 217073" data-attributes="member: 12069"><p>Frank I dont want to be confrontational but I disagree with just about everything in your post. Starting with item #1. The short mag performance vs the traditional mags is not theory, it has been well established over last couple years. One only need look at the 79 grain 300 WSM go toe to toe with the larger 90.4 grain 300 Win Mag. I dont think you can claim the factory win mag load are severly underloaded. </p><p> </p><p>Item #2. The case prep may go a long way, but on balance the shorter cases have clearly shown superior velocity control. I reference the benchrest shooters because these conditions allow the performance advantages to be quantified much more effectively than the field conditions you are shooting under. This year a 7mm WSM chambered 1000 yd Light Gun shot one of the best groups ever at 2.67". This is especially impressive considering this cartridge is nearly nonexistant in benchrest competition. The Rem Mag has never matched this despite its popularity and that it has been around for over 40 years. It would seem to me a cartridge that has some long range advantages.</p><p> </p><p>Item#3. I guess this item is subjective, but I would point out the case design of the WSM closely models after the recent crop of steep shouldered short benchrest cases.</p><p> </p><p>Item#4. You may not find moving a 1/2 pound of steel from the action to barrel as being desireable but most shooter would disagree with you.</p><p> </p><p>Item#5. I first ask if your two rifle barrels are the same length. My experience with the two rounds are quite different. My model 700 7mm Rem Mag velocities were consistently 100+ fps behind my shooting buddys Kimber 7WSM at all bullet weights up to 175 grain NP. In addition the Sammi pressure limit for the WSM is 65,000 vs 61,000 for the RM so I cannot see the RM keeping pace, with the longer powder case and lower design pressure.</p></blockquote><p></p>
[QUOTE="3006savage, post: 217073, member: 12069"] Frank I dont want to be confrontational but I disagree with just about everything in your post. Starting with item #1. The short mag performance vs the traditional mags is not theory, it has been well established over last couple years. One only need look at the 79 grain 300 WSM go toe to toe with the larger 90.4 grain 300 Win Mag. I dont think you can claim the factory win mag load are severly underloaded. Item #2. The case prep may go a long way, but on balance the shorter cases have clearly shown superior velocity control. I reference the benchrest shooters because these conditions allow the performance advantages to be quantified much more effectively than the field conditions you are shooting under. This year a 7mm WSM chambered 1000 yd Light Gun shot one of the best groups ever at 2.67". This is especially impressive considering this cartridge is nearly nonexistant in benchrest competition. The Rem Mag has never matched this despite its popularity and that it has been around for over 40 years. It would seem to me a cartridge that has some long range advantages. Item#3. I guess this item is subjective, but I would point out the case design of the WSM closely models after the recent crop of steep shouldered short benchrest cases. Item#4. You may not find moving a 1/2 pound of steel from the action to barrel as being desireable but most shooter would disagree with you. Item#5. I first ask if your two rifle barrels are the same length. My experience with the two rounds are quite different. My model 700 7mm Rem Mag velocities were consistently 100+ fps behind my shooting buddys Kimber 7WSM at all bullet weights up to 175 grain NP. In addition the Sammi pressure limit for the WSM is 65,000 vs 61,000 for the RM so I cannot see the RM keeping pace, with the longer powder case and lower design pressure. [/QUOTE]
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7mm WSM or 7mm rem mag?
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