Rifle Scopes Nightforce Competition DDR

[BillCh]

Greetings all,

I've been trying to find some information on the new Nightforce Competition scope with the DDR reticle.
Other than having an 1/8th MOA center dot I can't seem to be able to find much information about the DDR. I've looked on the Nightforce site and can't find any detailed information there either.
Does anybody know what the reticle subtensions are for the DDR or where I can get that info?
I called NF yesterday but they are close Fridays. I'd like to have this info for this weekend.

Thanks

B

 

[00bullitt]

The reticle subtends properly at 55x. Half power(27.5x) is marked with a dot on the power zoom ring. At half power, your subtensions double. To figure your subtensions at a magnification other than the calibrated setting; Divide your actual magnification in to the calibrated magnification and then multiply times your subtension.
e.g. - you want to know the main dot at 20x; 55/20 = 2.75 x .125 = .344moa

The center dot is .125 and the lower dot is .095moa
The gap on the left,right, and below of the center dot is .50moa
The thin line on each side of .50moa space is .016 thick and 1.50moa long
The distance to the first hash mark below center is .75moa and the short portion of line extended above it is .25moa and the width of each hash is .50moa
The distance to the second hash below center is 1.50moa and the distance to the second dot is 2.5moa and the space between is .50moa
The leg extending off the bottom of the second hash is .50moa

 

[BillCh]

00bullitt,
I copied an image of the DDR reticle from the NF site to my computer (hope that's OK) and then converted it to PDF format. I was able to mark up the image with the dimensions above, labeling the subtensions. I was going to post the marked up image but thought that might irk the good folks at NF.

Thank you for your help.

I did some scope swapping yesterday. The Competition scope is for my Savage F T/R. I took the NXS 12-42, NPR-1, off of my F T/R and put that on my 260 AI. The 260 AI had a NF BR 12-42, CH-3 on it. I think a friend of mine is going to mount my BR on his long barreled 260.

I zeroed everything at 300 yds. as usual. The first impressions of the new Competition scope are good. Light transmission seems to be good and the clarity is outstanding. I only shot 9 rounds so I won't know much more until after next weekend.

B

 

[00bullitt]

Bill,

We would not have any issue of you posting your own depiction of the DDR reticle breakdown. The DDR will be posted to the website very soon.

 

[BillCh]

Here's what I came up with.



I'd never make it as a graphic designer.

B

 

[rchaas]

I shot some 300 yard groups with this scope and reticle today and have a question. I am somewhat a newbie at this so please be gentle!

I am zeroed at 100 yards and a 3.3 moa drop is predicted at 300 yards. However, at 55X, holding over using the reticle markings as described above (rather than using clicks), I was hitting the bullseye w estimated 2.3 moa elevation (ie. bullseye aiming at a point halfway across the gap just above the lower most dot)

So, that seems like significantly less drop than predicted. I am confident of the ballistic data, and assume my range wouldn't be incorrect about the distance....what am I doing or thinking incorrectly?

Thanks,
Robbie

 

[NeoGeo]

Hey All, I am new to the forum and to long range shooting I am also looking at the Nightforce Competition scope as well. But I have never used a reticle like it or well seen one like it. So if anyone has any more info on it I would greatly appreciate it. If I get it, it will be going on my Savage Mod 12 .308 Palma. Thanks George

 

[BillCh]

rchaas,

It it that your predicted drop at 300 does not jive with the actual drop at the target
or
the reticle subtensions (as above) aren't correct
or
both?

B

 

[rchaas]

I think the subtensions are correct, but wanted to be sure. Its that the predicted and actual drop dont jibe. The more I think about this, the more I'm convinced our 300 yard range is a bit short. Either that or my beautiful new scope is miscalibrated (doubtful!?). I'm gonna measure our range this weekend an see if that explains it.

 

[00bullitt]

The subtensions in your scope are not incorrect. It would never have passed QC if so. The QC label that it wears ensures that it met our stringent quality standards prior to leaving our factory in Idaho.

How did you verify the predicted 3.3moa of drop?

 

[rchaas]

Never meant to disparage the scope, its awesome! I use an app called iStrelok. Its been spot on in a variety of other rifles. I remeasured things and noted that my scope was a bit higher than I thought, so predicted drop is 3.1.

I'm shooting:
6.5X284
SMK HPBT 142
BC 0.588
2900 fps
zero at 100yd (so they say at my range, not verified)
scope height 2.4"
wind was at my back, about 15mph

Robbie

 

[BillCh]

I think the problem is your ballistic model. Regardless of what ballistic calculator you use it needs to be backed up with actual field data and adjusted. I have iStrelok and use it occasionally. You may want to check out Ballistic AE. It has a provision to calibrate the drop predictions with actual bullet drop at different ranges. It gets me close. I'm not serious enough about it to bother past that.

Have you checked out the JBM web site? Go there and play around with that for a while. There are tons of variables to consider.

B

 

[rchaas]

JBM website calculators also suggest a 3.1 MOA drop at 300 yards, fyi. Nice website! Thanks for all replies.

 

[rchaas]

Range master says over time the berm erosion has led to the targets being moved forward a bit....range actual about 270 yards, explains everything!

 

[freedy]

The center dot is .125 and the lower dot is .095moa
The gap on the left,right, and below of the center dot is .50moa
The thin line on each side of .50moa space is .016 thick and 1.50moa long
The distance to the first hash mark below center is .75moa and the short portion of line extended above it is .25moa and the width of each hash is .50moa
The distance to the second hash below center is 1.50moa and the distance to the second dot is 2.5moa and the space between is .50moa
The leg extending off the bottom of the second hash is .50moa

Just for completeness what is the height and width of the thick horizontal lines extending to the perimeter?

 

[freedy]

Just for completeness what is the height and width of the thick horizontal lines extending to the perimeter?

I just found the official CTR-1 / DDR Reticle specifications at http://www.sportoptics.com/SpecSheets/CTR1-DDR-reticles.pdf. It doesn't appear to be anywhere on the NF site.

freedy