Box group

[Link]

Will shooting a box group test your scope?

 

[M-61]

Will shooting a box group test your scope?

If marching the crosshairs is called a box group, the answer is yes.
However I’d like to know why your testing your scope for and what led you to this.
eg: scope is perfect but you have rail or rings loose.

 

[Coyotefurharvester]

If done properly(on an accurate rifle) a box test will validate the turrets adjustment.

 

[Link]

Most days I stink. Just trying to eliminate mechanical error. Usually, 4 shots and done.

 

[F Class John]

There are several ways people test scopes but I would be in the camp that says box tests help and at minimum would give you confidence that you scope is tracking correctly. Here's how I do them on a Shotmarker if that helps.

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[NZ_Fclass]

Another scope test - to look for loose reticle/weak springs, is to dry fire the rifle, focused on a fairly plain background and look for a reticle "jump" The rifle needs to be secure and stable on a rest or bags.

 

[M-61]

Most days I stink. Just trying to eliminate mechanical error. Usually, 4 shots and done.

Ok. Are you saying a decent 4 shot group and the the 5th goes bad? Or even one shot of 5 goes bad regardless of order?
There are days that just don’t go well, for whatever reason. Steady diet? No way.

 

[Webster]

Will shooting a box group test your scope?

It will test for positive adjustments, but I don't think it test for holding adjustments over time? When I go to the range I always have to give the scope a few clicks to return to zero. I don't worry about whats causing it since it's a varmint hunting rifle. A couple clicks is about .4" at 100 yards. I assume it's weather or bedding shift????

 

[Link]

It will test for positive adjustments, but I don't think it test for holding adjustments over time? When I go to the range I always have to give the scope a few clicks to return to zero. I don't worry about whats causing it since it's a varmint hunting rifle. A couple clicks is about .4" at 100 yards. I assume it's weather or bedding shift????

true

 

[jimmymac]

Most days I stink. Just trying to eliminate mechanical error. Usually, 4 shots and done.

If I think I have a scope issue, the first thing I do is swap it out for another and go shooting.

 

[JSH]

Tracking, boxing, what ever you want to call it we are all on the same page.
If it doesn’t repeat, why and can it be fixed.
Having to + or - anything to get back on zero every range trip is trouble. Not a matter of if it gives up but when. And it will give up at the worst possible time.
My glass either repeats or it doesn’t. If it doesn’t and is worth and can be repaired it is. If not I will let the kids play with it.

 

[chop house]

here is a quick test i did after i found the advertised adjustment granularity did not make sense on a mueller scope:


rather than 1/8"/click advertised it averaged 0.16"/click at 100 yards. the puzzling thing is the non linearity. and of course shooting so few rounds i don't know whether to believe shot #1 or shot #6 when doing the calculation...

 

[Coyotefurharvester]

The average group size from the actual rifle must be used when testing scopes for tracking/repeatability. Both in vertical and horizontal shot dispersion. Wind changes during the test are always an issue as with load development/testing. Not good when you get a scope that doesn't adjust to specs, possibly just the wrong parts were used during assembly.

 

[Alex Wheeler]

The only way to do it right is with a scope checker and frozen scope. Id argue its better than the the collimator that the manufacturer uses. At least the ones I have seen holding the scope by hand. Otherwise we would not find so many scopes that move. This is still a big problem than people dont want to think about.