Home Forums Hunting & Shooting Hunting Optics scope height influence on trajectory

Having a scope slightly higher or lower does not effect the focus of the scope.The focus is normally adjusted at the eyepiece of the scope,not by varying ring height.

HAHAHAHAHAHAHAHAHAHHHAHAHAHAHAHAHHHHA.

I'm not sure about this topic. It's a bit confusing. I'll hold off until I hear what Jeff Olsen has to say...

Excuse me E, I thought you weren't here. What kind of nonsense is that, not having the scope come into perfect alignment with my eye is what I meant, and you knew it.

Then why didn't you simply say that instead of mentioning focus?



If there is one thing that I have learned on these forums,it is to go by what people say,and not to assume what they might mean.

Gentlemen,

From the posts that stubblejumper has made, I have been able to discover a pattern. He appears to think everything is either/or. And I think he just likes to argue. But that's just my unsubstantiated opinion; not like the facts I posted about trajectory.

I never disputed the information in your post.I did post some example calculations to show the differences between typical high rings and low rings with a typical varmint cartridge,after another poster stated that higher rings resulted in several inches difference in the point of impact,that caused him to miss groundhogs.

stubblejumper,

Like I wrote, you like to argue. Maybe it's because of one more observation. You are defencive.

I can't be something that doesn't exist!

That right there, is funny....

Though it makes about as much sense as the rest of this BS thread....

I better haulazz to the local whoreshop tomorrow, to buy my ultra-high See-Thru mounts, so my rifle can shoot a whoppin' SCH flatter at half-a-mile; accuracy and repeatability be damned, ruggedness be buggered, and commonsense be f'ked.....

Mythology is grand, to the believers, it seems....

And now we know.

the last thing you want on a 100 yard or less deer rifle or brush gun, is a high scope mount. It causes a higher amount of difference between POA and POI at shorter ranges i.e. under 100 yards- true it makes the gun shoot higher and therefore further on the same cartridge/velocity- but the difference between POA and POI grows as the scope height is raised.

Look at this simply diagram- notice what happens in under 100 yards. Brush mounts with a tunnel under the scope mount for using the open sights might seem like a good idea, but then the scope sighting is compromised- and you may as well just take the scope and mounts off, and use the open sights. The tunnel under the scope is an antiquated idea from the early 1920's when scope mounts weren't very good, and shooters wanted a back up sight i.e. iron sights in case their scopes fogged up or came loose, etc.




the curved line represents the bullet trajectory- the straight line just above it a low mounted scope- the line just about that a high mounted scope. As the scope is mounted progressively higher on the gun, the difference between POA and POI over the trajectory path will only grow larger. Sure, you can sight in dead on for 200 yards still, but it will be way off at 25 to 75 yards, which is the range most brush hunting is done at.

I'd take open sights over a very high mounted scope for under-100 yard shooting, any day. Think about it, if the scope was mounted very high, the sight line will intersect the bullet path at ever increasing higher angle, meaning anywhere before or after the actual zero point, it's going to be further off than a low mounted scope.

it has to be, it's common sense, the angle between line of sight and trajectory is being increased with higher scope mounting

I had trouble wading through your post and wasn't about to read 6 pages of crap. But the title "scope height infleuence on trajectory"..... Scope height isn't gonna change trajectory, but start getting real high with the scope and you definitely notice that "perceived" trajectory seems flatter. Bullets seem to drop less because they're actually going higher above line of sight. I discovered this with my AR which isn't a flattop and the scope height is 4" above boreline.

CaptainCrossman,

Most woulda bet this thread was dead. The only reason I am respondng is because you used two different points of impact. Do the same thing with the same point of impact and see what you get.


Ackman,


If you actually fire to test your idea you will discover the bullet does not go higher above the line of sight. I use repeatable science to proove to myself what happens.

"Actually fire to test" my idea?" I've shot that gun a whole bunch. But have it your own way.....you're a jerkoff and I'm not gonna argue about it.

Ackman,



That's might kind of you.

It's patently obvious that the opposite is true.


Nope. Sir Isaac Newton sez yer full of it.

Magnumdood,

Test for yourself. Then you will not sound so ignorant to those of us who have either run the computations or fired the test at range.

Even Ken mentioned the point blank range is extended with the higher rings.

Magnumdood is right. The trajectory of the bullet(amount of drop) remains the same.

The line of sight remains straight,always.This never changes.With higher scope mounting,the trajectory is manipulated so that the bullet must rise higher to intersect the line of sight the first time,and travels farther before intersecting the line of sight the second time(the distance at which it is "zeroed"). This gives the impression that a slower cartridge shoots "flatter" but in actuality it does not.

Given bullets of equal ballistic properties, it is impossible for the slower one to have a "flatter" trajectory than the "faster' one.....I suck at math and physics, and even I can understand that......

Ringman, or should I say Rainman, I could not look more ignorant than you if I tried. In the real world there is no free lunch; no free lunch no cold fusion. To get a flatter trajectory you have to impart more energy to the projectile. Your "Super-high EZ see" rings in no way contribute any energy to the projectile in the cartridge under them. What you're doing is manipulating the angle of the departure of the projectile. If you put your rifle equipped with your "Super-high EZ see" rings in a vise and fired a round, then took the "Super-high EZ see" rings off and fired another round, the two bullets would follow identical trajectories, striking paper targets at 100, 200 & 300 yards in identical spots, then fall to the earth in the same spot. There ain't no free lunch.