Rifle Scopes Having a hard time with Trijicon BAC

[JelloStorm]

Got my ACOG TA31-RCO M4 and got it mounted. Playing couch commando in my house trying to get the BAC system down, and I'm having a hard time with it.

With less-lit backgrounds I can focus on a distant target with both eyes open and use the red chevron to get on target, then switch to my dominant eye looking through the ACOG then to focus and fire.

However, I've noticed that if I sweep a window or go outside, my focus stays on the right eye looking through the ACOG unless I back way the hell off the scope.

Not a problem with my Aimpoint Comp since it's no magnification, however I'm having difficulties with the 4x ACOG.

Any suggestions?

 

[Will Fennell]

Re: Having a hard time with Trijicon BAC

Its gets easier, faster, when you go to the range and shoot( and therefore think about shooting), instead of <span style="font-style: italic">thinking about the reticle</span>.

 

[edwin907]

Re: Having a hard time with Trijicon BAC

Yep, you'll never get anywhere inside but a shooting lane, and that's not very helpful for BAC, but stationary practice is also a must.
Believe this, if an Aimpoint works for you an ACOG will as well. It's just takes a while for your brain to "figure it out", then the switching between magnified and nonmagnified views becomes automatic. I don't even think about the scope or reticle or anything at close range but the target, superimpose red mass on target and neutralize.

Before long you'll find yourself doing the same with everything else, BAC with M4S and Aimpoint 3X is fantastic, aided by the adjustable LED.
You'll want to add something to the ACOG to limit the fiber optic's brightness in high ambient light, but initially train with it all full brightness.
If you're lucky, you may have low phoria or offset between the magnified or not images. This really aids shooter confidence.

 

[VKC]

Re: Having a hard time with Trijicon BAC

Many people don't truly understand the Bindon Aiming concept and don't use their ACOGs correctly for close quarters or moving target shooting. It isn't as simple as just keeping both eyes open.

First off ,make sure your cheek and eye position is good so that your face is squared off directly towards your target, and both eyes are facing forward without tilting your face to the either size which can exaggerate eye dominance.

Tape the front of your ACOG so you can't see through the scope, of course not directly onto the lens.

Now look through your ACOG at a close (e.g. 10 to 25 yards) target.

Assuming that you are right handed and right eye dominant...your left eye will pick up the target, your right eye will not see the target but rather just the illuminate reticle. With both eyes open, your brain will superimpose the two images onto each other, and you will be on target.

It is very odd when you first try it, but this is a good way to train your eyes and mind. Later with practice, you can remove the tape or uncover the front of your ACOG and you'll still be able to do this.

The next step is to keep your cheek position and eye relief the same and quickly transition from close target to distant targets. It is quite a trip, and neat when you get the hang of it.