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| 7mm ultra mag. http://coondawgs.com/forum/viewtopic.php?f=43&t=39582 |
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| Author: | TatersCoonBurgers [ Fri Mar 09, 2007 3:47 pm ] |
| Post subject: | 7mm ultra mag. |
has any have any info on this round? Like it's ballistics. |
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| Author: | bubbasbbq [ Fri Mar 09, 2007 5:09 pm ] |
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The 7mm Remington Ultra Mag is the smallest of the Ultra Mag calibers. It offers ballistics roughly comparable to the 7mm STW, but burns more powder to do so. Because of its great case capacity it is overbore with all but the very slowest rifle powders. And because it burns so much powder and drives bullets at very high velocity, it also burns out barrels in short order. This has done nothing for the 7mm Ultra Mag's popularity. According to Hodgdon reloading data the 160 grain Nosler Partition bullet can be driven to a MV of 3214 fps. The trajectory of this bullet at a MV of 3200 fps looks like this: +2.4" at 100 yards, +3" at 150 yards, +2.5" at 200 yards, and -3" at 314 yards. This is probably the best all-around bullet weight for the caliber. Hodgdon reloading data shows a maximum MV of 3093 fps with a Swift 175 grain bullet. This is not the best bullet weight for long range shooting, but for use on very heavy game where great penetration is desirable the 175 grain bullet's sectional density of .310 makes it a viable choice. |
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| Author: | TatersCoonBurgers [ Fri Mar 09, 2007 5:58 pm ] |
| Post subject: | |
so i can shot out to 300 yards without holding over? |
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| Author: | Montana_Red_Neck [ Fri Mar 09, 2007 10:56 pm ] |
| Post subject: | |
Hey Tater- Check out this website for balistics from Guns and Ammo- http://www.gunsandammomag.com/ballistic ... l&x=4&y=10 -If I were you, I'd jump up to the .300 RUM.. You won't be dissapointed. |
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