Tndeer Logo

Page 1 of 1 1
Topic Options
#3042490 - 11/20/12 05:30 PM Trajectory Question
Wannabe
Spike


Registered: 01/02/09
Posts: 32
Loc: Sumner County

Offline
If I sight a .270 to zero at 100yds. Then shoot a target at 100 yds, that is at a 10% downhill grade. where whould the bullet hit? 100yds. up hill?
Top
#3042499 - 11/20/12 05:35 PM Re: Trajectory Question [Re: Wannabe]
mr.big
Non-Typical


Registered: 01/03/01
Posts: 28713
Loc: Copper Head Road

Offline
close enough to not even think about it,
_________________________
gun junky

Top
#3042531 - 11/20/12 05:52 PM Re: Trajectory Question [Re: mr.big]
Wannabe
Spike


Registered: 01/02/09
Posts: 32
Loc: Sumner County

Offline
Then let's talk 200 - 300 - 400 ...
Top
#3042532 - 11/20/12 05:53 PM Re: Trajectory Question [Re: mr.big]
Wannabe
Spike


Registered: 01/02/09
Posts: 32
Loc: Sumner County

Offline
The problem with not worrying about it is the extended ranges of 200, 300, 400, 500...
Top
#3042537 - 11/20/12 06:00 PM Re: Trajectory Question [Re: Wannabe]
Nhill
8 Point


Registered: 09/30/01
Posts: 1629
Loc: Maryville, TN

Offline
The yardage does not matter, only the slope.

Angles 10 or less do not make any noticeable difference.

For angles greater than 10 degrees:
Multiply the slant range by .97 for a 15 degree angle
.87 for a 30 degree angle
.71 for a 45 degree slope.

For example if you had a 350 yard shot at 45 degrees, you would multiply 350*.71 and get 248.5. You would treat that shot as a 248.5 yard shot. It works the same for up or down hill slopes, you will hit high either way.

I don't quite understand it all,but that is what my ballistics book says.

Top
#3042630 - 11/20/12 06:46 PM Re: Trajectory Question [Re: Nhill]
FULLDRAWXX75
12 Point


Registered: 01/29/07
Posts: 6222
Loc: Adirondack Mtns, NY

Offline
Slightly long read, but explains the whole thing pretty good..........

http://www.exteriorballistics.com/ebexplained/5th/33.cfm

FDXX75
_________________________
“Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.”
― Albert Einstein


Top
#3042706 - 11/20/12 07:43 PM Re: Trajectory Question [Re: FULLDRAWXX75]
Wannabe
Spike


Registered: 01/02/09
Posts: 32
Loc: Sumner County

Offline
Thank you Fulldraw. That is exactly what I was looking for.
Top
Page 1 of 1 1


Moderator:  RUGER, gtk, Bobby G, Unicam, CBU93, stretch, TurkeyBurd, Kimber45, Mrs.Unicam, Crappie Luck 
Hop to:
Top Posters
4105127
RUGER
86584
Deer Assassin
64969
BSK
60786
Crappie Luck
51376
spitndrum
Newest Members
mikescooterhester, PinkCamo, shaneb, Mr.Squirrel, Tadtad2!
13172 Registered Users
Who's Online
15 registered (JAY B, shaneb, Daniel n, bjohnson, chebuck, ruger7mag, 2 invisible) and 154 anonymous users online.
Forum Stats
13172 Members
42 Forums
90777 Topics
1060032 Posts

Max Online: 788 @ 11/11/13 08:06 PM
Moon Phase
CURRENT MOON
August
Su M Tu W Th F Sa
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
Forum Donations
The TnDeer.Com Deer Talk Forum is for Tennessee Deer Hunters by Tennessee Deer Hunters. If you enjoy using our Talk Forum and would like to contribute to help in it's up-keep. Just submit your contribution by clicking on the DONATE button below and paying with PayPal or a major credit card. Any amount is much appreciated. Thanks for your support!

TN Burn Safe

Generated in 0.79 seconds in which 0.372 seconds were spent on a total of 14 queries. Zlib compression enabled.