Arrow Decelleration
 

I'm wondering about how much an arrow slows down flying through the air. For instance, does a 60# bow hit as hard at 40 yards as a 50# bow hits at, say, 20 yards. Anyone have a ballpark idea of what sort of ballistic coefficient an arrow might have? I'm thinking that, due its length, it will be very high. Thanks. Roskoe

RE: Arrow Decelleration
 

That's an interesting thought. I've never really thought about it specifically, though I know a heavier arrow maintains it's speed and energy longer than does a light one. I'm not sure how much the draw weight plays into the equation other than allowing you to shoot a heavier arrow....

Very interesting thought....

RE: Arrow Decelleration
 

Get an archery program like www.archersadvantage.com As much as you are playing with the numbers,the $60.00 will be well worth the money.


It is much more accurate than the one you were playing with on the net.;)


It will tell you what different setups shoot at different yardages and their ke at those yardages.

RE: Arrow Decelleration
 

THanks, TFox. This numbers stuff matters to me, for some reason. Probably doesn't have muchapplication to field hunting, but I gotta know these things . . . .

RE: Arrow Decelleration
 

I ran some numbers of a 28 1/2" vectrix.


I used 6 grain per pound for each setup.


60# at 40 yards yielded 48.2 ft lb of ke. 360 gr arrow


50# at 20 yards yielded 45 ft lb of ke 300 gr arrow


The 50# bow shot the 360 grain arrow at 20 yards with 45.4 ft lb ke.

RE: Arrow Decelleration
 

The difference in arrow weight is creating an "apples and oranges" conflict in my thought process. Can you determine, from that program, how the same arrow from the same bow holds its speed at 3 feet, 20 yards, 30 yards, 40 yards, and 50 yards? THx. Roskoe

RE: Arrow Decelleration
 

reread my post,I shot the same arrow also.


6 grain per # is apples to apples,shooting the same arrow is apples to oranges.;)

RE: Arrow Decelleration
 

You lost me. Is there a feet per second loss, as the arrow flies through the air, that I can glean from this?

RE: Arrow Decelleration
 

Sorry,i was just responding to the apples to apples comment.


I used the 360 gr arrow out of the 50# and the 60# bow for the speed comparisons.


50# at bow 254 fps
20 yards 240 fps
30 yards 233 fps
40 yards 227 fps



60# at bow 278 fps
20 = 263 fps
30 = 256 fps
40 = 249 fps




NOW,the 50# bow with a 300 grain arrow

at bow 274 fps
20 = 259 fps
30 = 251 fps
40 = 243 fps

RE: Arrow Decelleration
 

The above numbers may not beEXACT, BUT the are very close.

RE: Arrow Decelleration
 

He is talking about grains per pound, and @ 6 grains per pound the arrow will weigh differently at 60#'s and 50 #'s......

6x60 = 360
6x50 = 300

To shoot a 360 grain arrow out of both a 60 and 50 pound bow wouldn't be comparing the same thing. The 60# bow is gonna shoot that arrow about......25 fps or so faster than the 50, so it wouldn't be an even playing field.

Again, a heavier arrow will retain it's speed and momentum longer than a light arrow. At least, I THINK that's what TFOX is getting at...eh buddy?

RE: Arrow Decelleration
 

We were posting at the same time.;)

RE: Arrow Decelleration
 

Thanks. Around 30 fps loss from zero to 40 yards isn't much. Most centerfire rifle bullets would lose twice as much in that distance.