bow trajectory

[CharlesK]

Is anyone familiar with sighting in their 20 yard pin at approx 4-5 yards and the 30 yard pin at approx 8 yards? At the pro shop today they said that these distances were equal for the pins because of the arc in the bow's trajectory. I usually start sighting my 10/20 yard pin at point blank adjust it step a few feet back, shoot and adjust untill I'm at 20 yards.

[Rickmur]

Interesting. Works for a gun but not at those distances of course.

[Straightarrow]

Your sight sits above your line of aim (arrow path). This causes very close ranges to sight-in similar to longer ranges. The closer the target, the longer the range it will sight-in at. This will vary from person to person, because of different anchors. No one yardage will work for everyone. To sight your bow in like this would be a waste of time in my opinion. You might come close, but you would not be exact. For instance, if you were actually at 3.5 yards instead of 3 yards, it might make a difference of 5-6 yards downrange at the actually distance.

Your distances are backwards. The 4 yard distance should be the one to correlate more closely to the 30 yard pin.

[davepjr71]

They're using a variation of the French method. If you site in at 3 yds you should be close at 50. The method is mainly for tuning but obviosly works for siting in.

[TFOX]

ORIGINAL: Straightarrow

Your sight sits above your line of aim (arrow path). This causes very close ranges to sight-in similar to longer ranges. The closer the target, the longer the range it will sight-in at. This will vary from person to person, because of different anchors. No one yardage will work for everyone. To sight your bow in like this would be a waste of time in my opinion. You might come close, but you would not be exact. For instance, if you were actually at 3.5 yards instead of 3 yards, it might make a difference of 5-6 yards downrange at the actually distance.

Your distances are backwards. The 4 yard distance should be the one to correlate more closely to the 30 yard pin.

I concur wholeheartedly

[98Redline]

Provided you know some very specific things about your setup (arrow trajectory being one of them) you can in fact sight in close and be reasonably close at longer yardages. I have used this method in the past (and a good working knowledge of TAP) to calculate the 8 yard point of impact when using my 20- 60 yard pins.

Unless you are very techically savy I would not recomend this as anything more than a roughing in of your pins. Shoot the actual yardages to get them right.

[CharlesK]

Yeah I agree with what you guys are saying. I just wondered if any one was familiar with this method of "rough sighting your pins",I wouldn't trust it at the actual range.

[TROPHYHUNTER25]

i wouldn't trust it at the greater distance your arrow is setteling down where at that close it hasn't even straitend out yet

[davepjr71]

Yesterday I decided to try the French tuning method. No paper tuning, new bow, rest and sitesremoved from last Allegiance. No adjusting rest I sited in a pin at 3 yds. Then went over to the 53 yd marker to tune my rest. Took 3 shots and that were right so I adjusted my rest accordingly. Next3 shots. X ring, right on X and third shot right outside of 10 ring.

If the arrow isn't set-up for center shot on the bow you can't just rely on the close-up shot. But I would think that if all you had was a short range and you paper tuned the bow you can site a pin in close and be effective at the long range equivalent.

However, I'd still recommend shooting at the longest ranges you can for practice.

[Len in Maryland]

After you get your bow sighted in, you might want to find out what pin to use when you're only a few yards away. You might have to use a 50 or 60 yard pin to hit a spot at just a few yards. This might prove to be beneficial when you have to put a wounded animal down.