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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm Allen Magnum load testing 160 gr Accubond
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<blockquote data-quote="Fiftydriver" data-source="post: 171228" data-attributes="member: 10"><p>Wind was blowing 20 mph today but I had a couple customer rifles that I HAD to range test to get shipped ASAP.</p><p> </p><p>So I ran out and took the lightweight 7mm AM along(also threw in my lightweight 338 AM to resight in as well).</p><p> </p><p>First group was not that great, 1.2" at 100 yards. Made a scope adjustment and next three cut a 0.744" ctc group with most of the group variation was horizontal from the wind slapping the side of the rifle.</p><p> </p><p>Let the barrel cool and shot three more, they landed exactly where I wanted them, 2.4" high, first two landed basically in the same hole, had to actually measure the bullet hole to make sure there were two in there. The third shot landed .4" straight up from that. I figure if I can get a .4 moa group in a 20 mph wind in a lightweight rifle things are shooting pretty well!!!</p><p> </p><p>Running the numbers, with a +2.4" impact at 100 yards you need only 4 1/4 mils to be able to reach out to 1000 yards. Basically the same as the 200 gr ULD loaded to 3150 fps. Wind drift is more then the 200 gr by around 1/2 mil and energy is off a fair amount as well but more then enough to still take game at long range.</p><p> </p><p>Nosler lists you should have a minimum impact velocity of 1800 fps for proper bullet performance, this load should arrive at 1000 yards with over 2000 fps and nearly 1500 ft/lbs of energy. Certainly not what the 200 gr ULD offers but still very impressive. In fact you can reach out to 1200 yards and you should still see full bullet expansion.</p><p> </p><p>only thing you have to do is watch the wind closer and tighten up the limits of wind speed you will shoot in.</p><p> </p><p>So far I am happy with the results. How the 160 gr would handle a close range impact at this velocity is yet to be seen but I amsure it would easily get through any big deer and through the vitals of any elk with a clean chest shot.</p><p> </p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 171228, member: 10"] Wind was blowing 20 mph today but I had a couple customer rifles that I HAD to range test to get shipped ASAP. So I ran out and took the lightweight 7mm AM along(also threw in my lightweight 338 AM to resight in as well). First group was not that great, 1.2" at 100 yards. Made a scope adjustment and next three cut a 0.744" ctc group with most of the group variation was horizontal from the wind slapping the side of the rifle. Let the barrel cool and shot three more, they landed exactly where I wanted them, 2.4" high, first two landed basically in the same hole, had to actually measure the bullet hole to make sure there were two in there. The third shot landed .4" straight up from that. I figure if I can get a .4 moa group in a 20 mph wind in a lightweight rifle things are shooting pretty well!!! Running the numbers, with a +2.4" impact at 100 yards you need only 4 1/4 mils to be able to reach out to 1000 yards. Basically the same as the 200 gr ULD loaded to 3150 fps. Wind drift is more then the 200 gr by around 1/2 mil and energy is off a fair amount as well but more then enough to still take game at long range. Nosler lists you should have a minimum impact velocity of 1800 fps for proper bullet performance, this load should arrive at 1000 yards with over 2000 fps and nearly 1500 ft/lbs of energy. Certainly not what the 200 gr ULD offers but still very impressive. In fact you can reach out to 1200 yards and you should still see full bullet expansion. only thing you have to do is watch the wind closer and tighten up the limits of wind speed you will shoot in. So far I am happy with the results. How the 160 gr would handle a close range impact at this velocity is yet to be seen but I amsure it would easily get through any big deer and through the vitals of any elk with a clean chest shot. Kirby Allen(50) [/QUOTE]
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7mm Allen Magnum load testing 160 gr Accubond
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