Author Topic: angle compensation (Read 7531 times)

guardian · « **on:** August 13, 2009, 10:10:08 PM »

What affect will gravity have on the arrow shooting at different angles up hill or down hill? Please give some examples. We have a debate going on here at home and need some help.

shoot-em-dead · « **Reply #1 on:** August 13, 2009, 10:12:24 PM »

Practice lots. Every bow is different.

Bob33 · « **Reply #2 on:** August 13, 2009, 10:24:22 PM »

What matters is the horizontal distance to the target. If you shoot straight up or straight down (zero horizontal distance), gravity does not cause the projectile to deviate from a straight line.

Horizontal distance can be computed by multiplying the actual distance by the cosine of the angle to the target.

At 40 yards, here is the horizontal distance to a target based on the angle (uphill or downhill):

0 angle: 40 yards
10 degree angle: 39.39 yards
20 degree angle: 37.59 yards
30 degree angle: 34.64 yards
40 degree angle: 30.64 yards
50 degree angle: 25.71 yards
60 degree angle: 20.00 yards

BLUEBULLS · « **Reply #3 on:** August 14, 2009, 05:56:53 AM »

I practice a lot at all ranges and varying inclines. It actually takes a dang steep shot to make much difference. most guys would probably be surprised. I think with all the talk of steep angle shots, a lot of people will over compensate and shoot low. To me, the hardest angles to shoot are from a sidehill position, watch that bubble.

only advice I'd give on this is practice-practice-practice. I try to find varying super steep terrain and set up multiple targets then shoot them from several spots with my pack on. I've learned a ton doing this.

I think the answer you're looking for is "aim for less yardage regardless if it's uphill or downhill, depending on the angle"

Slider · « **Reply #4 on:** August 14, 2009, 08:05:55 AM »

Aim for the heart!!!

let.it.fly · « **Reply #5 on:** August 14, 2009, 09:04:39 AM »

FIND A 3-D RANGE WITH LOTS OF UP AND DOWN.THERE IS ONE IN MT VERNON. I FORGET THE NAME BUT 90% OF THE SHOTS HAVE ATLEAST A LIL ELEVATION VARIANCE.

CoryTDF · « **Reply #6 on:** August 14, 2009, 09:27:15 AM »

Practice!!!! 3D tournaments are about the best realistic hunting training a bow hunter can get. The situations are real the targets are replicas of real size animals and the terrain is different shot to shot. If your shooting from your yard try standing on your roof and shooting. The only way your going to know what your bow does with different angles is to put yourself in that situation and shoot.

AKBowman · « **Reply #7 on:** August 14, 2009, 10:08:18 AM »

Like Bob said, all other factors being consistent (wind, rain, etc) the ONLY thing that matters is horizontal distance to the target. If you have a target that is 100 yards away from you but only 20 yards away horizontally than you aim at 20 yards and forget everything else.

AKBowman · « **Reply #8 on:** August 14, 2009, 10:11:35 AM »

The tricky part can be judging the horizontal distance.

coachcw · « **Reply #9 on:** August 14, 2009, 12:19:46 PM »

Remember to draw back , anchor then pivoit at the waist, I never take more than five yards off a shot for angle I'm try ing to hit the pie plate not the super kill .good luck and practice those angles . I also will guess short if I'm not sure that way you only miss low not hit the dead spot above the luns. Coach

GreenHunter · « **Reply #10 on:** August 14, 2009, 01:11:24 PM »

This really seems strange to me when it is said that way. It would mean that if I was in a tree stand and the target is within 5 yards of the tree I would not have a pin to use. I would have to go a little above my 10 yard pin?

I have been doing the walkthrough in Kenmore and have figured out how to compensate this in the field but haven't practiced out of a tree stand. Not that I plan on using one during the season. I agree that I don't go over a 5 yard adjustment from what my range finder says.

guardian · « **Reply #11 on:** August 15, 2009, 08:05:27 AM »

Bluebulls that is the answer i was looking for. Would ever one agree uphill or down hill aim for less yardage.

Bob33 · « **Reply #12 on:** August 15, 2009, 08:24:42 AM »

"It would mean that if I was in a tree stand and the target is within 5 yards of the tree I would not have a pin to use. I would have to go a little above my 10 yard pin?"

You should shoot as if the deer were five yards away from you on the level, however you would do that.

adam.WI · « **Reply #13 on:** August 15, 2009, 03:48:08 PM »

take it back to high school. Its the Pythagorean theorom. Up, down, side to side it's the horizontal distance. The only variable that could change that is wind drag, and that varies on the situation.

MichaelJ · « **Reply #14 on:** August 15, 2009, 03:55:55 PM »

So I'm curious, is it totally different with a rifle? I've always heard "downhill, aim low. Uphill, aim high" and that is for a rifle... why is it different with archery where you aim horizontal distance, not uphill/downhill???

Michael

adam.WI · « **Reply #15 on:** August 15, 2009, 04:15:34 PM »

It's not different for rifles, always shoot horizontal distance.

MichaelJ · « **Reply #16 on:** August 15, 2009, 04:24:38 PM »

Well dang that's an embarassing fact to learn after I been hunting for 9 years and shooting for a lot longer than that! lol Oh well I've never not gotten a big game animal that I've shot at!

Michael

h2ofowlr · « **Reply #17 on:** August 15, 2009, 07:41:12 PM »

A good rule of thumb if your shooting steep down hill angles is that 90 percent that miss an animal miss high.

DOUBLELUNG · « **Reply #18 on:** August 15, 2009, 10:15:47 PM »

Quote from: guardian on August 15, 2009, 08:05:27 AM

Bluebulls that is the answer i was looking for. Would ever one agree uphill or down hill aim for less yardage.

Exactly

AKBowman · « **Reply #19 on:** August 15, 2009, 11:55:30 PM »

Its the same whether your shooting a gun, bow or throwing a rock.

rooselk · « **Reply #20 on:** August 16, 2009, 06:30:11 PM »

Quote from: let.it.fly on August 14, 2009, 09:04:39 AM

FIND A 3-D RANGE WITH LOTS OF UP AND DOWN.THERE IS ONE IN MT VERNON. I FORGET THE NAME BUT 90% OF THE SHOTS HAVE ATLEAST A LIL ELEVATION VARIANCE.

The club and range you're referring to is the Silver Arrow Bowmen. You can get information about the club at the Washington State Archery Association website:

http://washingtonarchery.org/Files/WSAA%20Chartered%20Clubs.htm#_Toc217653095

Todd_ID · « **Reply #21 on:** August 19, 2009, 09:26:26 AM »

Quote from: h2ofowlr on August 15, 2009, 07:41:12 PM

A good rule of thumb if your shooting steep down hill angles is that 90 percent that miss an animal miss high.

Very true! About 20% of those high misses are from the yardage differences that have been discussed here, but the remaining 80% are from form errors. Most people drop their bow arm when they shoot downhill, and that moves the anchor point giving a high shot. The proper form is to draw the bow and aim level to get your normal anchor point and then bend at the waist to get down to the target. This keeps the anchor point the same, and then all that's left is to make a strong shot; that's hard to do without practice since it feels all messed up and contorted but is actually correct.

videostomper · « **Reply #22 on:** August 31, 2009, 10:09:28 PM »

Go to Amazon.com and look for the book 'Bowhunting Equipment & Skills' by Dwight Schuh, then preview page 94. It states that at bow distances the horizontal distance theory is applicable to both uphill and downhill shots, though at some point they diverge. Technically, and scientifically, Guardian lost the bet. For practcal purposes he won.

SHANE(WA) · « **Reply #23 on:** September 01, 2009, 12:25:25 AM »

I just get out my leupold range finder it tells me the yardage with angle compensated for

elkoholic1 · « **Reply #24 on:** September 08, 2009, 02:19:47 PM »

always will cut yardage on uphill and down hill shots, how much depends on the angle of shot and the yardage and the speed of your bow. archers advantage has a program that u can put on a palm pilot, but ull need a range finder and a inclanometer to tell the angle, dont think a animal will stand there while all that is happening.. practice practice and practice so u knowur equipment.

BULLBLASTER · « **Reply #25 on:** September 08, 2009, 03:04:44 PM »

Quote from: SHANE(WA) on September 01, 2009, 12:25:25 AM

I just get out my leupold range finder it tells me the yardage with angle compensated for

but you always have to compensate for something shane!

follow maggie · « **Reply #26 on:** September 08, 2009, 10:03:34 PM »

Bullet or arrow, it's the same- gravity pulling the projectile down. I'm not a good judge of distance or as smart as Bob, so I let the Leupold do the figuring for me

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Author Topic: angle compensation (Read 7531 times)

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