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bobaldoo
Optics Apprentice Joined: June/06/2011 Location: alberta canada Status: Offline Points: 72 |
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Posted: May/20/2013 at 18:24 |
was wondering if it was normal to have speeds up to 150 feet differant than what hornady states in their book.......
elevation...2900ft average speed 2812 7mm 160gr humidity 50% imr 4831 60gr temp 60f hornady 2950-3000 same load |
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"I can hear you, the rest of the world hears you and the people who knocked these building down will hear all of us soon." g bush....
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sakomato
Optics Master Joined: February/28/2008 Location: Houston Status: Offline Points: 1166 |
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Yes entirely possible
Manuals differ in velocity for the 160 gr bullets: Nosler - 61 gr IMR4831 @ 2933 fps, so 60 gr would be about 2900 fps Sierra - 59.9 gr IMR4831 @ 2900 fps Speer - 61 gr IMR4831 @ 2915 fps Swift - 61.5 gr IMR4831 @ 2897 fps So manuals differ but so do individual rifles Also your seating depth will influence velocities. The deeper you seat and the further from the lands your bullet is, the lower your velocity will be. So if you have a deep throat or you are seating deep in the case, then your velocity will be lower |
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Guns only have 2 enemies, rust and politicians
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bobaldoo
Optics Apprentice Joined: June/06/2011 Location: alberta canada Status: Offline Points: 72 |
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thanks for the input, much appreciated......
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"I can hear you, the rest of the world hears you and the people who knocked these building down will hear all of us soon." g bush....
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jonoMT
Optics Master Extraordinaire Joined: November/13/2008 Location: Montana Status: Offline Points: 4853 |
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Some barrels are faster than others. Especially if you get a custom barrel. I've gotten an extra 75 fps going to a custom over a factory barrel of the same length. Occasionally, you get a factory barrel or rifle model (such as the Rem 5R) that shoots better than typical.
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Reaction time is a factor...
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bobaldoo
Optics Apprentice Joined: June/06/2011 Location: alberta canada Status: Offline Points: 72 |
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i'm useing a remington sendero which has a 26" barrel, i was under the impression that the longer the barrel the faster the bullet..but i couldn't figure out why so slow, anyways this round groups extremely well so speed is not really the issue here.....
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"I can hear you, the rest of the world hears you and the people who knocked these building down will hear all of us soon." g bush....
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