question on sighting in with a scope
scythefwd
May 26, 2012, 09:59 PM
Took the .308 to the range today with a new scope. Got it grouping acceptably for hunting at 100y.
I zero'd at 100 with it on 12x (its a 4-12x40 bushnell elite 3200).
I dropped it down to 4x, and my POI shifted 3 inches straight to the 6 o'clock. Is this much shift normal when switching manigications?
If you enjoyed reading about "question on sighting in with a scope" here in TheHighRoad.org archive, you'll LOVE our community. Come join
TheHighRoad.org today for the full version!
browningguy
May 26, 2012, 10:30 PM
That's a broken scope (or bad shooting :) ), changing the power should not affect POI at all.
scythefwd
May 26, 2012, 10:43 PM
browning.. actually I know a little shift is common, but I wouldn't expect it to be 3 inches.. I duplicated this twice.. changing back and forth each time.. it was repeatable..
TurtlePhish
May 26, 2012, 10:53 PM
it was repeatable..
Bad scope, then. It shouldn't do that. At least it does it reliably, but it really shouldn't at all.
madcratebuilder
May 27, 2012, 06:33 AM
Is this much shift normal when switching manigications?
3moa is excessive but 1+moa is common with lower cost scopes. Next to the glass the gear box that moves the reticule is the most material cost in a scope. Many are plastic or plastic and metal and the best are fully machined metal.
If this change is a consistent value you can chart and compensate for it.
Sav .250
May 27, 2012, 08:01 AM
That's a broken scope (or bad shooting :) ), changing the power should not affect POI at all.
I`d lean that way as well.
The Lone Haranguer
May 27, 2012, 08:06 AM
Even I know that is a scope quality problem. ;)
10thMtn
May 27, 2012, 08:46 AM
I agree with Madcratebuilder. Lower cost scopes are less expensive because the parts are less expensive to make. Cheaper components equal less consistency, accuracy, or longevity. While a high-end scope shouldn't change moa with change in magnification, this 3 moa drop might just be something you've got to dope around -- especially if it's consistent. Just consider it part of "the cost of doing business" with this scope. But, hey...that's what makes it fun!
Art Eatman
May 27, 2012, 08:55 AM
If you're hunting at only 100 yards, I suggest that 4X is the more useful setting because of the wider field of view. Sight in with the scope set at 4X.
jerkface11
May 27, 2012, 09:55 AM
3moa is excessive but 1+moa is common with lower cost scopes.
The last time I checked an elite 3200 wasn't a low cost scope.
TxBobS
May 27, 2012, 01:55 PM
The last time I checked an elite 3200 wasn't a low cost scope.
It's only $270 online (from a reputable dealer).
Sure sounds like it is defective though. I would get it swapped out.
adelbridge
May 27, 2012, 02:46 PM
the only thing that should change with magnification is the eye relief and that changes only tenths of inches from 4X-12x. 3" shifts at 100 yards would be 6" at 200 yards if there is any predictability in a broken scope. Elites are really nice scopes and I am surprised to hear this problem. Send it back.
If you enjoyed reading about "question on sighting in with a scope" here in TheHighRoad.org archive, you'll LOVE our community. Come join
TheHighRoad.org today for the full version!
vBulletin® v3.8.6, Copyright ©2000-2013, Jelsoft Enterprises Ltd.