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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm SWT vs. 7mm Allen Mag
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<blockquote data-quote="daveosok" data-source="post: 191119"><p>In an original thread back in 2002 I tested a bunch of powders and bullets. In my weak 7mm STW I managed to hit 3493 fps with 75 grains of N560 without the need for a Lapua sized cartridge shooting the LRB 162 gr J40 bullets.</p><p></p><p>In some cases you don't need such a big case to achieve some of the fastest velocities.</p><p></p><p>I also knocked on the door around 3500 with the 168 SMK in 7mm with my STW.</p><p></p><p>Now I see no benefit between the Lapua based wildcat and the stw since I was able to acheive the speeds listed in the post on here with a 1/4 of the powder less but in a 34 inch barrel.</p><p></p><p>I also hit 3100 with the 180 gr Bergers in a very conservative loading of 74.5 grains of H1000. </p><p></p><p>Dan Lilja goes into great depth on diminishing returns on hsi website and at some point with all these huge cases your going to see it. The only way to obtain the most out of these large cases is very long barrels.</p><p></p><p>At shorter barrel lengths its simply not worth the money unless your in an argument and need the male length to subconsciously help you win it.</p><p></p><p>BTW 3100 fps with the 180 and 3493 with the 168 is plenty good for 1000 yard shooting and taking game.</p></blockquote><p></p>
[QUOTE="daveosok, post: 191119"] In an original thread back in 2002 I tested a bunch of powders and bullets. In my weak 7mm STW I managed to hit 3493 fps with 75 grains of N560 without the need for a Lapua sized cartridge shooting the LRB 162 gr J40 bullets. In some cases you don't need such a big case to achieve some of the fastest velocities. I also knocked on the door around 3500 with the 168 SMK in 7mm with my STW. Now I see no benefit between the Lapua based wildcat and the stw since I was able to acheive the speeds listed in the post on here with a 1/4 of the powder less but in a 34 inch barrel. I also hit 3100 with the 180 gr Bergers in a very conservative loading of 74.5 grains of H1000. Dan Lilja goes into great depth on diminishing returns on hsi website and at some point with all these huge cases your going to see it. The only way to obtain the most out of these large cases is very long barrels. At shorter barrel lengths its simply not worth the money unless your in an argument and need the male length to subconsciously help you win it. BTW 3100 fps with the 180 and 3493 with the 168 is plenty good for 1000 yard shooting and taking game. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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7mm SWT vs. 7mm Allen Mag
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