Nikon M-308 For AR10

[DAdams]

Anyone using a nikon M-308 on their AR10?
There is a BDC $30 rebate from Nikon putting them right about $500 including mount. Thinking about one for my Armalite 16. Is it overkill for someone who may never shoot over 400 yards and can the AR 16 inch take advantage of something rated out to 600 yards plus.

http://swfa.com/Nikon-4-16x42-M308-Riflescope-P51929.aspx

 

[madcratebuilder]

A 16" barreled 7.62 AR can shoot beyond 600yds as accurately as a longer barreled rifle, it well have more bullet drop as it well have less velocity.

A BDC scope calibration is based on the bullet and it's velocity, it only works with one combination.

In your price range I would look at one of the Vortex Viper scopes, several models to choose from.

 

[Robert101]

There are a lot of good choices out there. I went with a lower priced Nikon Buckmaster 6-18X40MM with the MilDots. It might only be available through MidwayUSA. It is very clear, and holds zero. It does have 1/8" adjustments. For more money you can go with a scope adjustable in Mrads. Look into the differences.

 

[flhtcuibyhd]

The BDC scopes are fully programmable. You just input your rounds data (velocity, bullet weight, etc.), and it will provide the exact range each dot will represent incuding how the magnification changes will do.

I use the .223 one and have several different rounds all mapped out. It works great and plan to get one for .308 as well.

 

[Robert101]

I didn't realize BDC scopes were programmable. How so? Are you suggesting that you can change the BDC settings in the reticle after it is made for a new cartridge load?

 

[MechAg94]

I think he is saying you can get calculated range estimates for BDC circles for different loads. I wouldn't call that "programmable" myself.

 

[DAdams]

You use the Spot On ballistic data for a particular round to generate the appropriate BDC. Otherwise In effect one has to do this intuitively or through experential trial and error for a particular round.

I don't know. I'm not seeing anything that compares directly value wise with the Nikon M-308 for the money. Scope, mount, BDC, lifetime warranty and Spot On software.

 

[madcratebuilder]

The BDC scopes are fully programmable. You just input your rounds data (velocity, bullet weight, etc.), and it will provide the exact range each dot will represent incuding how the magnification changes will do.

I use the .223 one and have several different rounds all mapped out. It works great and plan to get one for .308 as well.

No sir. There are some that you can get recalibrated turrets for, but the M-308 is a fixed calibration for one round only. The M-308 is only calibrated for the trajectory of the .308 Win/7.62 NATO Match round with 168gr. HPBT bullet, and only at one velocity. Change the load and you no longer have accurate BDC.

There are BDC scopes that you can mechanically change the BDC. Nothing programmable.

 

[flhtcuibyhd]

By programable, I meant using the BDC software. The .223 version is similiar to the .308 in that it is supposedly set for a 55 grain spire point type bullet at 3200fps ( I think that is right). I have not found a round or been able to reload one that exactly fits that bill, so the spot on software provides the correction. And when you want to move to a heavier or lighter round, just run it through a chrono, plug the results into the software and you are set. Zeiss has something like it as well and probably others.

I look at it this way, the BDC is always accurate as long as you know what each dot represents from a yardage perspective.

I've been very pleased with the Nikon.

 

[wally]

The real problem is accurate range estimation, the BDC reticles do nothing to help with this.

 

[DeMilled]

I am picking out a scope for my FN FAL and I've spent a lot of time playing with Nikon's Spot On Software.

You can try every scope they make, with any cartridge you can name(the software allows you to input actual muzzle velocity from your rifle shooting your cartridge) at whatever elevation, humidity, barometric pressure, etc. you are going to be shooting at.

I found that the 2-8x32 is spot on for my reloads at 100, 200, 300, and 400 yards set to the 6magnification setting.

For my uses that's pretty much perfect.

I can also get a custom elevation turret for about $100.

If I plan to take my rifle to a drastically different location I can either find the new values on the web site, or download the software to my smart phone and do it on site. Spiffy, no?


Caveat: I do not recommend this sort of scope for precision shooting at 600 yards. I do recommend this sort of thing for a semi-automatic general purpose rifle where being on target, quickly, out to 300 yards, with as much precision as can be reasonably expected out of this sort of rifle, is highly valued.


Personally, I'm sold.
It's not for everyone but I really like it.

I was at Wally-World tonight and got to play with it and love the circles for aiming points that the BDC uses.

 

[DeMilled]

Anyone using a nikon M-308 on their AR10?
There is a BDC $30 rebate from Nikon putting them right about $500 including mount. Thinking about one for my Armalite 16. Is it overkill for someone who may never shoot over 400 yards and can the AR 16 inch take advantage of something rated out to 600 yards plus.

http://swfa.com/Nikon-4-16x42-M308-Riflescope-P51929.aspx

To actually answer your questions...

The M-308 is a 4-16 power scope and I think it's meant for a bolt action.
May be a bit much for your rifle?

The 3-9X42 would be a good power range choice.
I would like to get the 3-9 myself but it's BDC does not line up with my cartridge.

I suggest you take your rifle, the ammo you're going to use for long range work, get some chronograph time, and then go back to Nikon's site to find something that lines up with what your rifle/cartridge does.

 

[TexasPatriot.308]

I have a few AR10s and M1A, for hunting purposes a good 3x9 scope is plenty unless you read too many hunting/shooting magazines.