Math Problem......

[ABaker]

If my 22-250 fires a 45 grain bullet at a velocity of 4000 feet per second, what does that convert to in miles per hour? :grin:

[KN]

2727.272727272727272727272727mph. I think I did that right.  KN

[Hopalong7]

KN, Now you know I can't give you credit for the right answer unless you show your work.  No I wasn't a school teacher.  I just remember being told that a lot.   4000ft/sec divided by 5280ft/mi mutiplied by 3600sec/hr =2727.27 mi/hr   GOOD SHOOTIN', Walt  

[New Hampshire]

Lets go further!  If Im correct that would mean the bullet is going Mach 2.7?  Now lets figgure out nanometers per second  :-D !
Brian M.

[michbob]

Nope.  Speed of sound at sea level:  761 mph @59 deg.  (standard value)  

2727.27/761=3.58 Mach.  Yowch! :shock:

Michbob.

[ABaker]

good times. thank you for playing.

[Questor]

Here's the math major's answer: zero, because it won't fly for an hour.

[New Hampshire]

Nope.  Speed of sound at sea level:  761 mph @59 deg.  (standard value)  

2727.27/761=3.58 Mach.  Yowch! :shock:

Michbob.

Sounds better than 2.7  :-D  :-D  :-D !  So no one wants to go to nanometers eh :twisted: .
Brian M.

[B_Koes]

Sounds better than 2.7  :-D  :-D  :-D !  So no one wants to go to nanometers eh :twisted: .
Brian M.

No problem...just convert feet to meters and then just keep moving the decimal to the right...keep going...

[Steve P]

At what point do you want the speed calculated?  The bullet is accelerating rapidly and then decelerating.  There is no constant speed.  The bullet would be going any specific speed for an instant only.  hmmmm

Did you know if you drop a bullet and fire a same bullet at the exact instant from the exact height, they will hit the ground at the exact time, if on level ground.  hmmm

If you fire a bullet perfectly straight up, even if no wind, it could never ever come down to hit your barrel again due to the earth's rotation and time of flight.   hmmmm

Did you know all rainbows have the same arc?  hmmmm

?   :-D   been a long day.

Steve  

[New Hampshire]

Did you know all rainbows have the same arc?  hmmmm

Steve  

Yeah, its the Leprechauns that change  :-D !
Brian M.

[Twanger]

What amazing to me is that an SR-71 Blackbird can fly just about that fast. Can you imagine? Flying the speed of your bullet?
My motorcycle goes about the speed of an arrow. That's a sobering thought when you realize how far into a tree that arrow can go.

[Major]

I bet your motor cycle isn't as sharp as an arrow however, now is it?

[Keith L]

I bet your motor cycle isn't as sharp as an arrow however, now is it?

Likely has a lot more mass though.

[jamie]

SR71 flies a Mach 4+

Yes, alot of people actually think a bullet rises when it leaves the barrel when in fact it is the barrel that is pointed upwards and the bullet begins to drop from the axis of the bore as soon as it leaves the barrel.

Here's something else to think about;
If your bullet is traveling @4000 fps and your barrel is 24" (2 feet) then that means that if your barrel last for 3000 rounds then you have effectively used that rifle for 1.5 seconds.   So how much have you spent to enjoy 1.5 seconds?

[Major]

Snip.....................

Here's something else to think about;
If your bullet is traveling @4000 fps and your barrel is 24" (2 feet) then that means that if your barrel last for 3000 rounds then you have effectively used that rifle for 1.5 seconds.   So how much have you spent to enjoy 1.5 seconds?

Yes, but how do you put a price on the enjoyment and afterglow.