Bushnell 6500,4-34X50mm Tactical Function Test

dthunter

dthunter

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Hi gunnutz!
Hope you dont mind me posting this in this forum
I would like your opinions of my findings.
I put this thread in the optics section, but no replies.
Anyhow, here we go:


I set up at 100 yards, and shot a box test.
I Shot with the following procedure:

1.) Shot a group at normal point of aim (for all groups I shot at the same aiming point)

2.) Moved the scope adjustment 24 Moa up, shot a group

3.) Moved the scope adjustment 24 Moa up, shot a group

4.) Moved the scope adjustment Left 12 Moa shot a group

5.) Moved the scope adjustment Down 24Moa, shot a group

6.) Moved the scope adjustment Down 24moa, shot a group

7.) Moved the scope adjustment Right 12Moa, shot for point of aim.


*After all that,the scope returned to near perfect zero!
I was very pleased with that!

The groups consistantly moved 27"/24Moa adj.
And 13.5"/12Moa adj.

Therefore; 96 clicks per 24Moa Adjustment On scope.

27" divided by 96 clicks= .28125

I found the scopes adjustments are not as advertised (it happens I know)
The actual click value was .28125

About 7% bigger than what I had plugged into my ballistic program. Lol!

That made a huge difference on the accuracy of my software!
It was so worth the time to do!

Your comments guys? Did I miss anything?

Anyone know what the "MOA" is on this adjustment of .28125?

Thanks guys, and have fun, and straight shoot'in!
 
I love to shoot, and really want it to be reasonably predictable.

And yes, with the support of my awsome wife, I find the time available to me.
lol! God bless her little heart! ;-)

I spent 8-10 hours out shooting, all three days last weekend!
Lots of loading,work and time!
Its a passion I have always had!

Take care Max Owner!
:)
 
dthunter said:
Your comments guys? Did I miss anything?
Click to expand...

1 - did you measure the distance from your rifle to the target? Just because it's a "100 yard" range doesn't mean that it is... (the "100m" range I often shoot at is actually 95m).

2 - usually a "box test" also includes windage movements as well. (EDIT: oops, I see you did that; I could have sworn though when I read your post that I saw, "aha, he missed that!". Sorry!)

There are a several things you can see in the results from a box test:

- the size of your scope's adjustments
- whether the windage adjustment moves exactly perpendicular to the elevation adjustment
- whether the scope's movements are actually in the exact same orientation as the crosshairs themselves
- whether the mechanism returns to a starting point
 
Last edited:
.28125" per click? Is .00125 of an inch relevant?
Sounds as if 4 clicks move your point of impact 1 1/8", rather than the 1.04" that would be a minute of angle, asssuming that you were actually firing at a true measured 100y.
The important thing is that the actual change in point of impact is known and is predictable and repeatable.
 
tiriaq said:
The important thing is that the actual change in point of impact is known and is predictable and repeatable.
Click to expand...

Exactly. I box test all my new scopes (except my tasco as it seems to do it on it's own) and my 6500 easily passed the test as well.

Steve
 
I have the same scope and noticed the same thing. 4 clicks is slightly more than 1" at 100yards.

Awesome clarity though and Me being the nutcase that I am, gave it a few whacks with a rubber mallet.. still held zero.
 
Thanks guys for your input.
The distance is exactly 100yards. Measured repeatedly over time.

Tiriac: the exact measurements that I indicated are just a formality I sometimes do. Not that 5decimal places are needed.

I am just curious what .28125 at 100yds is in moa.
 
dthunter, good to hear that the distance really is 100 yards.

.28125" at 100 yards is .28125/1.047 = .268 MOA

Nothing significant or special about that, the only reason it is different from .2500 is because of miscalibration in the manufacturing of the scope. Internally, the erector tube pivots at a certain point, and is pushed by the screw of the adjustment knob at a certain offset distance to that pivot point. Most likely this pivot distance is in error (design, or manufacturing) by 7.2% from what it ought to be, and that is why your adjustment is 7.2% coarser than it "ought" to be.
 
Either way, it sounds like the scope passed the test, my 6500s have been solid as a rock, even on some heavy kickers.
 
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