For example on a sniper rifle the scope is on top of the barrel where the bullet actually is released, surely if you aim the crosshairs at a point, the bullet would actually be shot a couple of cm's below where you origianally aimed?
2007-10-03 00:34:55 · 15 answers · asked by Anonymous in Sports ➔ Outdoor Recreation ➔ Hunting
If the line of the centerline of the barrel and the the centerline of the scope were parallel then yes you would for some distance always be shooting just below the scope. This would occur until the velocity of the bullet began to drop off and the rate of fall would increase.
But the line of the bore and the line of the scope are set to intersect. So immediately in front of the gun the bullet is low, then at a user set distance the two are exactly in line, then the bullet continues to rise higher than the line of sight, then the bullet can no longer overcome gravity with its upward inertia and it begins to fall, then as the bullet slows and the rate of fall increases they intersect again. and then the bullet continues to plummet until it hits the earth.
2007-10-03 01:25:28 · answer #1 · answered by Maker 4 · 3⤊ 0⤋
The center of the crosshairs is indeed three or four cm above the center of the bore. But they aren't aligned in exact parallel. That's a good place roughly to start, and that's called "bore sighting." The bullet travels in a parabolic arc (more or less), and the scope is aligned so the line of sight is slightly convergent to the line one would imagine leading from the center of the barrel. The bullet rises past that level and then drops below it at distances determined by the degree of convergence. In hunting rifles, one normally chooses a spot at which the path of the bullet and the center of the crosshairs are the same and leaves it there [I'm using "crosshairs" loosely here; there are many different reticles besides crosshairs]. In other situations, the elevation knob on the scope is adjusted to the range of the shot. If you'll notice, modern scopes have two adjustment knobs, to adjust both windage and elevation.
Back to hunting, most people choose to "zero" the scope at 100 or 200 yards or meters. Better is to zero at point blank range, which has a definition that is surprising to most people: Suppose you are hunting an animal with a vital area that's ten cm in diameter. You'd want your scope zeroed so the bullet doesn't travel either above or below 10 cm from the line of sight at any range at which you might take the shot. You then figure out the exact flight characteristics of the bullet and work backwards to adjust the "zero" of the scope to a distance that makes it possible to stay within those parameters. That requires some tricky math and a fair amount of shooting, but it's quite useful. Snipers, on the other hand, often have to take shots that are at such varied distances that they can't do that, and they have to adjust for range accordingly.
2007-10-03 05:17:50 · answer #2 · answered by Anonymous · 0⤊ 1⤋
It's hard to answer without a picture.(see link, scroll down). The scope is set above the barrel, so if the scope and barrel are parallel the bullet will always fall below the point of aim. Also the scope sees straight. Bullets travel in an arc. So to sight-in a scope, find a set distance, shoot at a target, adjust sight to bring point of aim into the bullseye. Remember, because of the arc trajectory, shots closer than your sight-in distance will hit higher than the cross hairs. Farther shots will hit low.
2007-10-03 01:27:27 · answer #3 · answered by Buck B 2 · 0⤊ 1⤋
When installed the bore and the scope are parallel. When aimed and fired at some point the path of the bullet and where the crosshairs are aimed will converge.
The crosshairs of the scope are adjustable so that the path of the bullet and where you place the crosshairs converge at the point you choose. This is called zeroing the scope.
2007-10-03 15:51:59 · answer #4 · answered by eferrell01 7 · 0⤊ 1⤋
Scopes are aiming devices that need to be adjusted to place a bullet in a user specified area at a predetermined distance. All bullets follow an arched flight path. If you know the flight path of the bullet and where the scope is set to meet that bullet you can adjust the guns level to hit most anything at distance.
2007-10-03 03:50:41 · answer #5 · answered by Anonymous · 0⤊ 1⤋
thats why the scope is adjusted to hit exactly where the crosshairs are at a specific distance. if you shoot closer then it will be higher and if you shoot farther away then it will be lower than the crosshairs but it has to do with it being adjusted the scope can be adjusted vertically and horizontally and the scope is nearly even with the barre but where the bullet trails and the vision of the scope they are kind of like a v where the bullet hits. if you can picture that. simply enough you are correct but the adjustment can make it dead on. at whatever distance its adjusted to.
2007-10-03 00:41:45 · answer #6 · answered by pan_clock 3 · 3⤊ 0⤋
Bullets are subject to the law of gravity. Vision is not. Your line of sight is strait. The bullet's path is a curve. Ideally you have the scope adjusted so that the bullet is traveling up at first (maybe to first 100 yds or so). It will cross your line of sight at, for example, 25 yds. Once it begins to fall it will again cross that line of sight, say at 250 yds. If you are not shooting at 25 or 250 yds, you must adjust for range.
The numbers that I have quoted are for the M-16A2 rifle shooting mil. std. M193 ball ammo. While not equipped with a scope, the sights are significantly higher than the barrel.
2007-10-03 01:42:21 · answer #7 · answered by Anonymous · 4⤊ 0⤋
style of shotgun is significant while determining length of barrel. A semi vehicle a 28" barrel may well be stable. For a pump, I nonetheless like a 30" basically because of the fact I actual have shot the two a 28" and 30" with a pump and the 30" merely held greater applicable communities and that i hit greater geese with it. On an over below i might circulate with a 32" barrel. Now with this reported, maximum human beings use shorter barrels for skeet taking pictures. I shoot skeet, seize, and carrying clays. i exploit the longer barrels because of the fact it makes me shop my head down during the pictures the place as on a shorter 26 barrel which I even have I actual tend to return off the barrel with my eyes because of the fact the barrel is so short. yet it somewhat is me. I actual tend to hit greater objectives and birds with longer barrels than shorter barrels. And please do no longer basically purchase a shotgun formerly attempting it on and seeing the way it feels to you. If it does not experience genuine then are not getting it. purchase the only that feels stable to you.
2016-12-14 06:24:31 · answer #8 · answered by ? 4 · 0⤊ 0⤋
Thus the reason you sight a scope.
ie., calibrate your scope.
How? ... a quick overview..
Go to a firing range.
Set up your rifle in a fixed position (sandbag or mount)
Aim at a target.
Change scope settings to match your aim/shot mark.
OR, if you don't want to shoot the gun...
Bullet laser pointers are available. (They fit in the barrel and emit a laser beam). Find a location with at least 10yards of distance to set up a mock target. Calibrate via the red dot.
2007-10-03 00:44:28 · answer #9 · answered by G L 3 · 1⤊ 0⤋
The line from the barrell to the target converges with the line from the scope with the target calibrated over certain distances either meters or yards.
In other words the scope and barrell are not paralell
2007-10-03 00:39:58 · answer #10 · answered by Anonymous · 5⤊ 0⤋