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Distance a round will travel

This is a discussion on Distance a round will travel within the Ammo Dump forums, part of the Firearm Forum category; Can someone give me an idea of how far a round will travel? Henry .22LR lever action Remington Yellow Jacket HP (estimate 1100 fps) Assume ...


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Old March 14th, 2012, 04:55 PM   #1
 
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Distance a round will travel

Can someone give me an idea of how far a round will travel?

Henry .22LR lever action

Remington Yellow Jacket HP (estimate 1100 fps)

Assume standing position (5 ft above the ground)

I read it would take approximately .55 seconds for the round to drop to the ground. So it is as simple D=V x T ?

Distance = 1100 feet per sec x .55 sec = 550 yds



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Old March 14th, 2012, 05:23 PM   #2
 
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It's a little more complicated than that. The velocity is not constant, it decreases from the moment it leaves the barrel. I guess you could use the formula you mentioned as a "no more than" upper limit for it. The angle of elevation also matters. In a "perfect" situation, the distance a projectile will travel is maximized if launched at a 45 degree angle. This ignores a whole host of other factors like the rotation of the earth, sectional density, ballistic coefficients, etc. I'll see if I can dig up a better formula.

Last edited by RdHwk45Colt; March 14th, 2012 at 05:47 PM.
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Old March 14th, 2012, 05:58 PM   #3
 
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Range of a Handgun Bullet

Still looking for a formula that incorporates gravity and friction.
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Old March 14th, 2012, 10:52 PM   #4
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JohnD, I don't have the formula at hand but I do have Oehler's Ballistic Explorer installed on my computer, which makes life much easier. For computations, the pull of gravity is 32 fps squared, you need the ballistic coefficient of the bullet, bullet weight, distance, and finally muzzle velocity. With these parameters and the right formula, you could compute time of flight (TOF), retained velocity (RV), retained energy, bullet drop, and distance traveled.

First off, the estimated muzzle velocity for a Remington Yellow Jacket is 1500 fps from a 20" rifle barrel ... considerably higher than the 1100 fps you quoted.

Plotting the trajectory on Ballistic explorer ... assuming flat ground, muzzle perfectly parallel with the ground, and 5 feet above the ground: the bullet will travel 222 yards until it hits the ground. When it hits the ground, velocity will have dropped to 904 fps and would take .62 seconds. If the rifle was sighted in for a typical range of 75 yards, the muzzle would be pointed up a little which would extend the distance to 249 yards at a retained velocity of 856 fps and a time of flight of .70 seconds. If the rifle was sighted in for 200 yards, the muzzle would be pointed up even more, which would make the bullet travel 337 yards with an RV of 776 fps and a TOF of 1.01 seconds. Each increase in sight-in distance will raise the muzzle higher, which in turn makes the bullet travel farther.

As RdHwk45Colt said, if the barrel was pointed up at the optimum angle of 45 degrees, the bullet would travel about 862 yards ... almost a half mile and a TOF of 3.74 seconds. With a couple good ricochet hops, it's conceivable the total distance traveled could be as much as a mile, which is why you see a warning on ammo boxs; "DANGER: Range 1 mile".

Last edited by Iowegan; March 14th, 2012 at 11:08 PM.
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Old March 15th, 2012, 12:22 AM   #5
 
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It will travel far enough to hurt someone if you are not careful
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Old March 15th, 2012, 03:02 AM   #6
 
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There are a host of conditions to consider. Some examples are wind direction and speed, humidity, barrel length, bullet type, velocity of round, weight of round, gravity just to name a few. Bottom line, a bullet will travel until it hits something. That's why you should always know what's behind your target.
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Old March 15th, 2012, 03:09 AM   #7
 
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Quote:
Originally Posted by Iowegan View Post
JohnD, I don't have the formula at hand but I do have Oehler's Ballistic Explorer installed on my computer, which makes life much easier. For computations, the pull of gravity is 32 fps squared, you need the ballistic coefficient of the bullet, bullet weight, distance, and finally muzzle velocity. With these parameters and the right formula, you could compute time of flight (TOF), retained velocity (RV), retained energy, bullet drop, and distance traveled.

First off, the estimated muzzle velocity for a Remington Yellow Jacket is 1500 fps from a 20" rifle barrel ... considerably higher than the 1100 fps you quoted.

Plotting the trajectory on Ballistic explorer ... assuming flat ground, muzzle perfectly parallel with the ground, and 5 feet above the ground: the bullet will travel 222 yards until it hits the ground. When it hits the ground, velocity will have dropped to 904 fps and would take .62 seconds. If the rifle was sighted in for a typical range of 75 yards, the muzzle would be pointed up a little which would extend the distance to 249 yards at a retained velocity of 856 fps and a time of flight of .70 seconds. If the rifle was sighted in for 200 yards, the muzzle would be pointed up even more, which would make the bullet travel 337 yards with an RV of 776 fps and a TOF of 1.01 seconds. Each increase in sight-in distance will raise the muzzle higher, which in turn makes the bullet travel farther.

As RdHwk45Colt said, if the barrel was pointed up at the optimum angle of 45 degrees, the bullet would travel about 862 yards ... almost a half mile and a TOF of 3.74 seconds. With a couple good ricochet hops, it's conceivable the total distance traveled could be as much as a mile, which is why you see a warning on ammo boxs; "DANGER: Range 1 mile".
As always, "Top shelf" information
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Old March 15th, 2012, 04:42 AM   #8
 
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Thanks for the information guys--more detailed than I needed. I really just wanted an idea of how much room you need behind a target to make sure there is a safe distance to allow rounds to fall to the ground.

Special tip of the cap to Lowegan. I appreciated the extra parameters to think about.

I also didn't realize the muzzle velocity of the Yellow Jacket was that high. How about if the same load was shot from a Browning Buckmark with 5 1/2 in barrel?
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Old March 15th, 2012, 04:49 AM   #9
 
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Shoot ground targets, they're fun and you don't have to worry about bullets whizzing through the air unless you're on a mountain top.
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Old March 15th, 2012, 08:09 AM   #10
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JohnD, I don't have specific chronograph data for a Yellow Jacket in a 5.5" Buckmark but the computed velocity would be about 1000 fps. Assuming the same conditions as above, (barrel parallel with the ground) the bullet would hit the ground at 198 yards. If you were sighted in at 25 yards, the bullet would hit the ground at 226 yards. Not all that much different than a rifle.

As I mentioned before, just because a bullet hits the ground doesn't mean it will stop. A ricochet still has enough power to damage property or hurt (possibly kill) someone at a distance far greater than the above. Years ago I lived in a house out in the country. The neighbor kids were shooting pigeons off the top of their barn with 22s ... some 500 yards away. One of the bullets hit a window in our house and shattered it.

You should always have a backstop when shooting any rifle or handgun. A dirt berm or pile of sand works great and keeps bullets contained.
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Old March 15th, 2012, 08:35 AM   #11
 
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I nearly fell off my stool at a watering hole up north when I heard a bunch of rednecks yucking it up over what a great time they had trying to shoot thrown clay targets with a .30-06.

What great neighbors!
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Old March 15th, 2012, 08:55 AM   #12
 
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I nearly fell off my stool at a watering hole up north when I heard a bunch of rednecks yucking it up over what a great time they had trying to shoot thrown clay targets with a .30-06.

What great neighbors!

That was, and probably still is, standard practice at Gunsite at the end of some rifle courses. which do you have a problem with, the practice, or "rednecks"?
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