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One of Us |
can someone please tell me the corrected velocity for a 404 gr bullet with a G1 traveling at 2446 fps at 13 feet to chronograph. want to see if this will work out to 200 yards if possible. thanks Jim | ||
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One of Us |
What does that even mean? Any ballistics chart will tell you the bullet path; and at 200 yards it won't drop much. | |||
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one of us |
???????? | |||
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One of Us |
Correcting velocity from 13 feet to muzzle is not going to make a scrap of difference to the ballistics chart. With a heavy bullet such as you have proposed, the corrected muzzle velocity would be about 2450fps. Wind, temperature and altitude (air density), will have a a much greater effect on the bullet velocity and trajectory out to 200 yards than a couple of fps gained by correcting to muzzle. Most chronographs do not read bullet velocity that accurately anyway so your 2446 fps at 13 feet will only be an average not an absolute. | |||
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One of Us |
No one can tell you because you have not given us enough information. What is the ballistic coefficient of the bullet, the weight doesn’t matter for trajectory. Regardless, the difference is likely to be less than 15 fos, as others have stated it won’t matter. Just use your chronograph value. . | |||
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Administrator |
I am assuming you are talking about hunting with this cartridge. If so, forget all these silly nitpicking ballistics, go out and practice with it. I hunt with a 375, and sighting it every time before a hunt, as long as the bullet is between 1-2 inches high at 100 yards, I never bother correcting it. I have shot animalswith it with this setting from 7 yards to over 500 yards. | |||
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One of Us |
This ^^^^ | |||
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One of Us |
Yes, the OP has some strange aspects but maybe we should cut the man some slack. First, the drop in velocity between muzzle and 13ft is so small you can forget it. I take it you have some hot .400-plus calibre (but nothing like the 416 Barrett) and want to fire a 400-grain bullet with a G1 coefficient. I've only just looked up that G1 stuff myself and doubt whether many big-game bullets around that calibre are even that pointy. Googling calibres with similar characteristics will probably show you could set it up to shoot about 3" high at 100 yards and have it near enough to zero at 200 yards but I would suggest some compromise (say 1.5" high at 100yds) and accept a drop of 2-4" out at 200. If you want to hunt somewhere hot like Africa, it could pay to back off on the load, though, which might make it drop more in cooler weather at home. | |||
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