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Author Topic: X95 Zero?  (Read 1068 times)
Bryan Bryan
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« on: June 13, 2019, 01:24:11 AM »

Where do you zero you X95 at? 100 yards?
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thehun
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« Reply #1 on: June 13, 2019, 08:00:43 AM »

I zero my SAR 50m...
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MaverickNH
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« Reply #2 on: June 13, 2019, 08:41:02 AM »

Where do you zero you X95 at? 100 yards?
At the range?


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Rastoff
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« Reply #3 on: June 14, 2019, 01:38:09 PM »

I use 100 yards because that works with the reticle in my ACOG.
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Bryan Bryan
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« Reply #4 on: June 14, 2019, 01:50:38 PM »

I'm looking for a zero that provides a maximum point blank range out to 300 yards to hit a 6" plate with a meprolight 21 triangular dot and a 3X magnifier.
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thehun
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« Reply #5 on: June 14, 2019, 02:33:40 PM »

50m

But you can just google search it....
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BillyG
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« Reply #6 on: June 14, 2019, 09:11:03 PM »

Use www.shooterscalculator.com to figure your MPBR. Figure your desired Point Blank Range first then use the Ballistic Trajectory program to see your zero yardages. Set the “Chart Range” to 400 yds and set the “Chart Step Size” to 1 yd. and you can see what your POI should be at any yardage you want or need to “zero” (depending on how long your firing lanes are) for that particular PBR.

Depending on ammo type, a 6” MPBR is going to give you roughly a 60 yd near and 280 yd far zero with 1.76” high POI at 100 yds. Zeroing at 25 yds you’d be -2.08” POI. Roughly. You’d need to plug in your data to be more accurate.
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Rastoff
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« Reply #7 on: June 15, 2019, 01:00:10 AM »



This is the trajectory of a .223Rem, 62gr round. I used 54 yards (50 meters) as the zero distance.

As you can see, this covers a pretty good POI range from 0-300 yards.

Here is the same chart when zeroed at 100 yards:


Notice the dramatic drop difference at 300 yards. So, for your purpose, the 54 yard zero would be good. I'm going to stick with the 100 yard zero for a couple of reasons.

I usually only go out to about 200 yards. If you look at the chart you'll see that from 0-200 yards shows a drop of no more than 3.5". Also, at about 120 yards it's just barely above 0. What this means for me is that I never have to worry about holding under. I'll only ever have to hold over. More to the point, if I put my cross hairs directly on the intended POI, I will never be more than 3" low. If I were to zero at 54 yards, the swing goes from 3.5" lot to over 3" high. This means I'd have to hold under for distances from just greater than 50 yards to about 270 yards and hold over for less than 50 and greater than 270. It's just too much to think about for me. Especially since I rarely go beyond 200. I do see the value if you're shooting to 300 regularly.
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thehun
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« Reply #8 on: June 15, 2019, 10:15:14 AM »

50m zero is the best battle zero...period...for 5.56 at least.
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MajorKong
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« Reply #9 on: June 15, 2019, 02:18:13 PM »

Which brings up another question, manufacturer published muzzle velocity.  Is there a standard for the barrel length?  I shoot.223 Fiocchi VMAX which they publish  muzzle velocity as 3300 fps.  Is that going to be from a 26" barrel? 
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Beach Bill
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« Reply #10 on: June 15, 2019, 08:36:48 PM »

Which brings up another question, manufacturer published muzzle velocity.  Is there a standard for the barrel length?  I shoot.223 Fiocchi VMAX which they publish  muzzle velocity as 3300 fps.  Is that going to be from a 26" barrel? 

I've never tested Fiocchi, but I recently tested Wolf Gold 223 in one of my 18-inch Tavor SARs. Six shots averaged 3016 fps, SD 21, ES 55, True MV was 3030 fps. I was acquiring this data to run ballistics (bullet drops) in the Strelok app for my new Primary Arms 3x Prism optic for that rifle. That ACSS reticle assumes a 100 yard zero.
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Bryan Bryan
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« Reply #11 on: June 15, 2019, 08:43:14 PM »

Yeah, http://www.shooterscalculator.com/point-blank-range.php looks good. It lets you plug in scope height over bore which is the big issue with Tavors when compared to ARs. Don't want to overlook that. I'll spend some time with it. Thaks.
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rjhyland
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« Reply #12 on: June 18, 2019, 07:55:32 PM »

I zero in with the 25 yard battle zero that is posted somewhere in these forms to get me 75 and 300 yards zeros. Then I zero it to my scopes recommendations to get proper BDC that is  an inch above center at 100 and 5000 feet above sea level. Or so the manual says...
« Last Edit: June 18, 2019, 07:57:51 PM by RebellionOnIce » Logged
Bryan Bryan
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« Reply #13 on: June 18, 2019, 09:04:17 PM »

Ive heard about the 75 yard zero for the Tavor. How do you go about getting it at 25 yards. Will it be 4" low or someting like that?
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rjhyland
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« Reply #14 on: June 18, 2019, 10:22:35 PM »

Yeah, here is a screen shot of the target. I seen it someplace on the forums here (credit to the original poster). If this prints to scale it should work and you should be within your 6 inches at 300 with your M21 and 3X, but barely. Aim a tad high  Cheesy


* Screenshot_20170807-091854.png (467.82 KB, 1080x1920 - viewed 159 times.)
« Last Edit: June 18, 2019, 11:06:59 PM by RebellionOnIce » Logged
Beach Bill
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« Reply #15 on: June 18, 2019, 11:24:53 PM »

Yeah, here is a screen shot of the target. I seen it someplace on the forums here (credit to the original poster). If this prints to scale it should work and you should be within your 6 inches at 300 with your M21 and 3X, but barely. Aim a tad high  Cheesy

Here is a link to that target on Google Drive. The original version I obtained was this PDF.

https://drive.google.com/file/d/1-A1er76tFCkuCFpQLT1AsPYBaS0x10cI/view?usp=drivesdk

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Bryan Bryan
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« Reply #16 on: June 19, 2019, 12:25:58 AM »

This target looks perfect. I think I got the info I need. I will be printing it out! Thanks so much.
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Incognito
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« Reply #17 on: June 19, 2019, 05:28:23 PM »

I just posted in another discussion thread about my first attempt at 500 yard shooting with my Tavor SAR.  I currently have mine zeroed at 100 yards but after researching the ballistics of the M193 bullet I am going to change and zero it at 200 yards.  At that distance it should shoot less than 2" high at 100 and less than 6" low at 300 yards.  For the scope I am using, Vortex Spitfire 3x, this will allow me to use the same reticle holdover mark for 100 - 300 yards.  After that the second holdover position will work out correctly for 400 yards, the third position for 500 yards, and the last position for 600 yards. 

So, I guess my answer is that the best range to zero any given rifle depends heavily on what if any optic you are using and if that optic has BDC holdover positions in the reticle. 
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Bryan Bryan
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« Reply #18 on: June 20, 2019, 11:20:40 AM »

The table in the 25 Yard Target appears to have errors in the AR-15 (50 yd) section.

The most obvious error is it shows 0.92 in the 50 row. This should be 0, not 50.

Am I missing something here?
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