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Rifles, Reloading, Optics, Equipment
7mm STW
7mm STW Reloading Thread
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<blockquote data-quote="cmor" data-source="post: 1492145" data-attributes="member: 42940"><p>I shot a ladder today with R26 and 143 Grain Hammer Hunter bullets. Loaded mag length, using Federal 215 primers. Gradous 7Stw, 1:9.5 twist Krieger, 28" barrel.</p><p></p><p>Weather 80 degrees - 90 percent humidity - 30 feet above sea level. </p><p></p><p>I started at 76 grains and had pretty heavy ejector mark on brass at 82 grains. Still no sign of pressure in bolt lift, but I stopped there, and will pull the bullets that I loaded with higher charges.</p><p></p><p>My Labradar missed a number of shots, which it doesn't normally do. I don't know if it was due to the all copper bullets, the speed, the drizzly rain, or something dumb I did.</p><p></p><p>Anyway, this combo is much faster than I expected, and looks to have very nice accuracy potential.</p><p></p><p>80 Grains 3557 fps - No pressure signs</p><p>81 Grains 3601 fps - No pressure signs</p><p>82 Grains 3643 Pressure - ejector mark on brass & poi jumped up 4" at 600 yards</p><p></p><p>79-81 Grains were all within 2" vertically and 3" horizontally at 600 yards.</p><p></p><p>Going to load a bunch at 80 grains, which should put me in a nice wide accuracy node, well below pressure in this rifle, at about 3550 fps.</p><p></p><p>Not a good time to be a wild pig, when I test terminal performance.</p></blockquote><p></p>
[QUOTE="cmor, post: 1492145, member: 42940"] I shot a ladder today with R26 and 143 Grain Hammer Hunter bullets. Loaded mag length, using Federal 215 primers. Gradous 7Stw, 1:9.5 twist Krieger, 28" barrel. Weather 80 degrees - 90 percent humidity - 30 feet above sea level. I started at 76 grains and had pretty heavy ejector mark on brass at 82 grains. Still no sign of pressure in bolt lift, but I stopped there, and will pull the bullets that I loaded with higher charges. My Labradar missed a number of shots, which it doesn't normally do. I don't know if it was due to the all copper bullets, the speed, the drizzly rain, or something dumb I did. Anyway, this combo is much faster than I expected, and looks to have very nice accuracy potential. 80 Grains 3557 fps - No pressure signs 81 Grains 3601 fps - No pressure signs 82 Grains 3643 Pressure - ejector mark on brass & poi jumped up 4" at 600 yards 79-81 Grains were all within 2" vertically and 3" horizontally at 600 yards. Going to load a bunch at 80 grains, which should put me in a nice wide accuracy node, well below pressure in this rifle, at about 3550 fps. Not a good time to be a wild pig, when I test terminal performance. [/QUOTE]
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7mm STW
7mm STW Reloading Thread
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