Tilted weapon
I watched an ad where a guy was shooting a weapon with the weapon tilted 45 degrees from vertical. Would the vertical point of impact change to his aiming point? In other words if it was sighted in to hit dead nuts at 100 yards would it not shoot high if tilted?
Sage 1
Sage 1
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I watched an ad where a guy was shooting a weapon with the weapon tilted 45 degrees from vertical. Would not the vertical point of impact not change to his aiming point? In other words if it was sighted in to hit dead nuts at 100 yards would it not shoot high if tilted?
Sage 10 -
It would shoot to point of impact both lower and toward the side it is tilted toward 
You may disagree. & that is your privilege however that is the way it has worked out 100% of the time during my shooting for over 50 years.
How to explain it to you I am at a lost sorry
EDIT II Ok lets try it this way the line of sight is a straight line either the cross hairs of a scope or the correct sight picture with Iron sightsThe flight of the bullet is an ARC. withpistol or Rifle held upright "no tilt" the bullet will start out below the line of sight so to hit the target it will have to intersect this line of sight so It will be climbing from end of bore to the target. when you tilt now the flight of the bullet will still be an arc but the line of sight will be lower and to the left if you tilt to the left0 -
I disagree as the vertical distance between the scope and barrel is less thus the bullet would hit higher. Plese explain if I am incorrect. 0 -
If it was sighted in that way it would hit where he aimed. 0 -
Not knowing what advertisement you refer to, it is hard to say.
The trajectory will be in a vertical plane no matter how the gun is oriented. The line of sight will be at whatever angle the gun is canted. This will produce an error. I have seen it computed and you definitely would not want to do it on a small or distant target.
Some Three Gun competitors will have a secondary sight set at an angle to the primary scope. It is used only for close range targets where error introduced by the cant will not be significant.
Some "operators" will cant the gun to reduce exposure while shooting from cover. Again, ranges will likely be small and the error minor.0 -
Depending on the height of the scope above the bore and zero distance, the most likely POI will be low and left of the crosshairs(for a right hand shooter tilting the rifle scope to his left. Within 100 yards, it won't make much difference. 0 -
So the "homies" are taking up scoped rifles, gangster deer? - you just might need 30 bullets to harvest one! 0 -
Of course it makes a difference! Both vertically and horizontally.
Run an external ballistics program such as JBM. Change the distance the scope is above the bore, and you'll see the change in the drop. There will also be a change in the horizontal POI if the change in scope height also includes a change in horizontal distance, such as when rotating the rifle.
It's plain and simple physics.0 -
Thank you. 0 -
Look at the sighting set up on this,
Iron sights are for short range and are at 45dg angle [;)]
3 gun shooters use these [^]0 -
quote:Originally posted by Sage1
I watched an ad where a guy was shooting a weapon with the weapon tilted 45 degrees from vertical. Would not the vertical point of impact not change to his aiming point? In other words if it was sighted in to hit dead nuts at 100 yards would it not shoot high if tilted?
Sage 1
I think it would shoot a hair low and off to the side tilted, but as a general point, you are correct.
Guns are all traditionally sighted vertically, so the line of sight and trajectory of the bullet are in the same vertical plane.
when shooting, vertical is also easier to reproduce shot-to-shot than any given angle.
A gun sighted vertically will not shoot to point of aim if canted off to one side.
Now, as a matter of practice, it may not make any difference. If the range is short, then the deviation of point of impact from point of aim will be minimal, and may not be significant. For a 100 yard high velocity shot you're probably only talking 2 inches or less.
For handgun shooting "gangsta" style, the error introduced into shooting/aiming by the skill of the shooter (or more precisely lack thereof) is probably more important than small differences between point of aim and impact due to sight canting. With that particular affectation, the biggest real world issue is that guns shot sideways are more likely to malfunction.
Note that for the canted iron sights on an AR-15, those sights are almost certainly sighted in canted, so the point of impact and point of aim coincide at short range. If you were trying to use that sort of setup for precise shooting at long range you would probably run into issues, but they're not used that way, and it doesn't really matter.0 -
Many long-range position shooters, and Benchrest rail gun shooters, will have their scopes offset or canted. The secret to their success is remembering how much to compensate for the cant when going from one yardage to the next. Matches have been lost when the cant is "forgotten' in the heat of battle. It does make a difference.
ray0 -
OK, what the deal is, that in the advertisment you saw, no, the rifle will shoot to the point of impact. You were most likely watching an advertisment from STAG, or RRA, advertising their new competition ready AR-15, that was built for 3 gun competition. The AR double duties as a long range, and a short range weapon.
There is a 1913 rail at 45 degrees on the right and/or left side, that runs full length. A set of BUIS are mounted on those rails. The gun has an optic on the top rail for long distance. The BUIS for short range, the rifle is rotated 45 degrees, and is sighted in like that. It works extremely well, and the "OLD GUY" Jerry Miculek, is one of the pioneer's of this set up.
Since the BUIS are sighted in in the 45 degree canted posistion, and since they are posistioned directly over the centerline of the bore, they are capable of center of mass shots out to 0-300 yards, in the right hands. They are no different than BUIS on the flat top and gas block.
Best
EDIT 1
Sage1,
The point of my post, is to tell you, that yes that scope can be sighted in dead on at one distance, other than that, the bullet will be high or low, and left or right. That is also why it is more important to get the crosshairs of a scope, square to the centerline of the bore of the rifle, and not to the shooter's shooting style, for when shooting normally. If the crosshairs are not square to the rifle, movment up or down in adjustment will move it left or right.
Now, to more inform you, when the shooter was doing that commercial, when the gun was canted 45 degrees, the shooter was not using the scope, but was using the back up sighting system, or the short range system.
Bottom line, is if you cannot differentiate between the two systems on one gun, and their proper use, then stick to one system, so not to get confused.
Best0 -
I agree with tsr1965, on my own ar I have a 3x9 scope mounted normally and a 45* mount on the right rail sporting a fast fire dot. both are Bore" sighted in their proper use angle and both shoot to point of aim when used. 0 -
The point of this post was the affect if the weapon was sighted in with the scope vertical and then the rifle bore rotated. You can mount a scope on the buttplate and sight it in. What the point? 0
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