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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7 WSM vs. 300WSM at 1000yds
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<blockquote data-quote="Mysticplayer" data-source="post: 32372" data-attributes="member: 8947"><p>From the guns that I have built and shot at 1KM, I would definitely go with the 7mm for these reasons.</p><p></p><p>If competing, weight and recoil will be issues so barrels can't be super long. Fatigue with the heavier bullet will affect groups. The WSM case is getting a bit small for real heavy 30cals. Perfect for the heavy 7mm.</p><p></p><p>Accuracy may not be at the vel level you need to make the 30cal 'work'. With the 7mm, even if it ends up being slower, the high BC will help at 1KM. Most barrels shoot their best at less then max pressures.</p><p></p><p>Compare the effects on a ballistic program. I bet you will find that BC plays a much larger role then vel when it comes to wind drift. drop is of little importance as you will know how far you are going. Misjudging the wind by a few MPH is pretty common and the higher BC bullet will shoot through those conditions better.</p><p></p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 32372, member: 8947"] From the guns that I have built and shot at 1KM, I would definitely go with the 7mm for these reasons. If competing, weight and recoil will be issues so barrels can't be super long. Fatigue with the heavier bullet will affect groups. The WSM case is getting a bit small for real heavy 30cals. Perfect for the heavy 7mm. Accuracy may not be at the vel level you need to make the 30cal 'work'. With the 7mm, even if it ends up being slower, the high BC will help at 1KM. Most barrels shoot their best at less then max pressures. Compare the effects on a ballistic program. I bet you will find that BC plays a much larger role then vel when it comes to wind drift. drop is of little importance as you will know how far you are going. Misjudging the wind by a few MPH is pretty common and the higher BC bullet will shoot through those conditions better. Jerry [/QUOTE]
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7 WSM vs. 300WSM at 1000yds
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