quiksilver

ARROW TRAJECTORY (in inches) - Zero @ 20 Yds.

YARDAGE 10 20 30 40 50

S200+4.30-13-34 -65
P225+3.40-10-27 -51
E250+2.80 -8-22 -41
E275+2.30 -7 -18-34
D300 +1.90 -6-15-29
325 +1.6 0 -5-13 -24
350+1.40 -4 -11 -21
375 +1.20-4 -10-18
400+1.1 0 -3-9-16

** Just to be clear - this is where your arrow will hit, if you hold on the bullseye at X yards, while using your 20 yard mark. **

As the speed debate will continue through 2008 and onward, I figured I'd sketch out a chart, just to show you guys what speed will really get you, from a yardage estimation perspective.

There's no doubt that the faster your arrow is moving, the more fudge factor you have in estimating the range.

I just figured this might be helpful for a few of you guys talking about buying new hunting bows for '08 - especially with all the new, fast bows and ultralight arrows hitting the market.

All my info came from this link: http://www.lmariana.com/traj.htm

Germ

Thx Quick for helping all archers

If you want an arrow

Carbon Tech CT safari 15.5 GPI
http://www.carbontecharrows.com/Hunting/hunting_master_detail.php?ModelNumber=S500S

Roskoe

Under field conditions, this whole chart is going to be affected, to a considerable degree, by the difference in elevationbetween the peep and the nocking point. The chart appears to be the actual flight of the arrow. But when the sights are 4" above the arrow, the difference between the sight pins at the various distances is less than the chart would suggest. The arrow is flying uphill quite a bit when the sights are level.

For instance, for my 260 fps setup, the actual 30 yard drop is slighly less than 6" relative to the 20 yard pin. The difference between 60 yards and 70 yards is about 25".

my7pointmonster

Im thinking its not right for my rig because ive shot 50 yards at a target that wasnt 3 ft and i diddnt have that much trouble... Maybe im wrong wich is entirely possable, Ither way thanks for the chart you always do help everyone on this forum

Ryan.

quiksilver

Roskoe - the chart isn't 100% precise, but it's close enough to get in the ballpark.You're right,the chart doesn't account for the peep/nockpoint gap, however it ALSO doesn't account for the arrow slowing down downrange- which will offset what you're talking about, to a degree.

For my hunting setup, I'm coming in right around 350, andthat ballistics calculatorputs me +/- an inch or two.

GMMAT

Is this really saying my hunting arrow drops between 6-7" at 30yds?.....assuming I put my 20yd pin on the target?

Am I reading that right?

Paul L Mohr

I have shot arrows between 200-250 fps with no need to change my 30 yard pin.

Paul

GMMAT

Wouldn't an arrow weighing 1 lb. drop more than an arrow weighing 350GR? (naturally?)

Just because an arrow is chrono'd at 300fps at 2'.......where does this chart pick up? What's the arrow speed at 20yds?

Can this be (I have no idea) accurate if we don't know the weight of the arrow?

Just asking.

Roskoe

No. That's what I'm getting at. Let's look at the trajectory of the .223 Remington. The actual trajectory of the bullet is dropping the instant the bullet leaves the barrel. At 100 yards, it is 2" low; at 200 yards it is almost 8" low, and at 300 yards it is almost 20" low. This is with the barrel bore perfectly level.

Put a scope on the rifle mounted 1.5" above the bore. Sight in for 100 yards. Now you are only 2.4" low at 200 yards, and only 10" low at 300 yards.

Now look at a Colt AR-15 (same caliber and bullet) where the sights are mounted almost 3" above the bore. Sight in a 100 yards. You are still 1/2" high at 200 yards. And only about 6" low at 300 yards.

Does this make sense?

NY/Al

Nope, according to my physics teacher (but he has been known to be wrong) weight has nothing do to with verticle drop. A heavier arrow will travel slower though and have more downward momentum...or something like that...