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Link Posted: 3/17/2017 11:00:19 AM EST
[Last Edit: 3/17/2017 12:06:43 PM EST by bradleyc]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By pezboytate:


@bradleyc

Are you using an A1 or A2 front sight post? Carbine sight radius?
View Quote
A1 round post. And yes, carbine sight radius.

Edit: @pezboytate

I just learned about tagging users.
Link Posted: 3/17/2017 5:01:05 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By pezboytate:


@stagepaint

Does this look right?

https://www.AR15.Com/media/mediaFiles/138579/200y-ZERO-LEUPOLD-TMR-D-RETICLE-1-166947.JPG
View Quote
Looks pretty close to what I have written down for some of those ranges, I'll test it out next time I get out to the 600 yd range. Thanks!
Link Posted: 4/16/2017 7:08:49 PM EST
BTT
Link Posted: 6/30/2017 10:27:12 AM EST
BTT
Link Posted: 11/4/2017 2:19:40 PM EST
BTT
Link Posted: 11/26/2017 10:57:48 AM EST
I fixed most all of the links. If you have any requests or see anything that needs updated, let me know.
Link Posted: 11/27/2017 11:57:05 AM EST
Possible to get a 6.5 grendel 123gr SST @ 2350fps (.510 g1) with a 1-6 ACSS?
Link Posted: 11/27/2017 12:34:16 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By CastorTroy:
Possible to get a 6.5 grendel 123gr SST @ 2350fps (.510 g1) with a 1-6 ACSS?
View Quote
@CastorTroy

Is that reticle identical to the ACOG ACSS reticle? If not, could you contact them and find out the subtensions?
Link Posted: 11/27/2017 12:44:50 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By pezboytate:

@CastorTroy

Is that reticle identical to the ACOG ACSS reticle? If not, could you contact them and find out the subtensions?
View Quote
This is what I found online:

300=2.85
400=5.95
500=9.6
600=14.15
700=19.65
800=26.25

Thanks!!
Link Posted: 11/29/2017 11:46:47 AM EST
@castortroy

Does this look right for bullet drop? I assumed 2.75" height over bore and 500 ft elevation.

Attachment Attached File


Does this look correct for the line thicknesses and color of the reticle?

Attachment Attached File
Link Posted: 11/29/2017 12:31:11 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By pezboytate:
@castortroy

Does this look right for bullet drop? I assumed 2.75" height over bore and 500 ft elevation.

https://www.AR15.Com/media/mediaFiles/138579/6-375941.JPG

Does this look correct for the line thicknesses and color of the reticle?

https://www.AR15.Com/media/mediaFiles/138579/ACSS_1-6-375944.JPG
View Quote
@pezboytate yes all that looks correct
Link Posted: 11/29/2017 4:09:53 PM EST
@castortroy

Here's what I'm seeing. The blue lines are 100 down to 800 yards. If you zero so the center is POI=POA at 100y, you're off by 100y. Even if you zero so the center is POI=POA at 200y, you're still off by 50y. I plugged in M855 from a 14.5" and 16" barrel and it lines up in between those.

Attachment Attached File


Let me know what you want to do.
Link Posted: 12/12/2017 3:54:31 PM EST
[Last Edit: 12/12/2017 3:54:41 PM EST by MandPdude]
@pezboytate

Can you do the Trijicon TA01 reticle (not NSN), out of a 14.5" with XM193?
Link Posted: 12/12/2017 4:32:16 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By MandPdude:
@pezboytate

Can you do the Trijicon TA01 reticle (not NSN), out of a 14.5" with XM193?
View Quote
@MandPdude

Please email Trijicon and get the subtensions for that reticle, I don't have them.

Is it mounted on a carry handle or flat top?
Link Posted: 12/12/2017 4:36:53 PM EST
[Last Edit: 12/12/2017 10:11:25 PM EST by MandPdude]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By pezboytate:

@MandPdude

Please email Trijicon and get the subtensions for that reticle, I don't have them.

Is it mounted on a carry handle or flat top?
View Quote
@pezboytate

It will be mounted on a flat top, and these are the subtensions my google fu came up with:

BDC @ 200 .8

BDC @ 300 3.0

BDC @ 400 6.0

BDC @ 500 9.8

BDC @ 600 14.4

BDC @ 700 20.3

BDC @ 800 27.8

And here's the reticle:

Attachment Attached File
Link Posted: 12/13/2017 1:38:07 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By MandPdude:

@pezboytate

It will be mounted on a flat top, and these are the subtensions my google fu came up with:

BDC @ 200 .8

BDC @ 300 3.0

BDC @ 400 6.0

BDC @ 500 9.8

BDC @ 600 14.4

BDC @ 700 20.3

BDC @ 800 27.8

And here's the reticle:

https://www.AR15.Com/media/mediaFiles/298495/TA01_reticle_popup-389456.JPG
View Quote
@MandPdude

Here's what I get for your drops:

100m- 0 MOA
200- 1.4
300- 4.3
400- 8.3
500- 13.5
600- 20.4
700- 29.2
800- 40.2

Perhaps my numbers are off or your subtension numbers are off, please double check everything. The blue is your impacts:

Attachment Attached File
Link Posted: 12/14/2017 12:47:23 PM EST
@pezboytate

I confirmed those subtensions with Trijicon.

What if the zero is set at 50 yards as opposed to 100?
Link Posted: 12/14/2017 3:49:55 PM EST
[Last Edit: 12/14/2017 3:51:54 PM EST by pezboytate]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By MandPdude:
@pezboytate

I confirmed those subtensions with Trijicon.

What if the zero is set at 50 yards as opposed to 100?
View Quote
@MandPdude

Do the calculated drops look reasonable?

This is with 300m POI = POA, about the same as 50M POI = 100M stadia POA

The dimensions on the right are how far off they are in MOA. At 100M. That's 1.5" at 100m, 5.0" at 200, 4.6" at 400m, and 13.7" at 500.

Attachment Attached File
Link Posted: 12/14/2017 4:08:32 PM EST
[Last Edit: 12/14/2017 4:11:36 PM EST by MandPdude]
For some reason it seems farther off then the calculators that I used (no offense, you know more about this than I do).

Most people have said that with the TA-01 mounted on a flat top (approx 2.7" height over bore) on a 14.5" rifle, zeroed at 50 yards, shooting .55 grain 5.56, matches up with the BDC pretty well out to 600 yards.
Link Posted: 12/14/2017 4:22:03 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By MandPdude:
For some reason it seems farther off then the calculators that I used (no offense, you know more about this than I do).

Most people have said that with the TA-01 mounted on a flat top (approx 2.7" height over bore) on a 14.5" rifle, zeroed at 50 yards, shooting .55 grain 5.56, matches up with the BDC pretty well out to 600 yards.
View Quote
Here's the numbers I used. 2.75" HOB, .243 G1 BC, 55 gr, 3050 fps, .224", 500 ft altitude. I don't shoot M193 so I'm not sure on the BC. This reticle is in meters instead of yards. I can change it the blue to yards but realize that the width of the stadia rangefinder won't line up perfectly.
Link Posted: 12/14/2017 5:03:01 PM EST
Here is what I got from Federals site for XM193:

BC-.246"

Muzzle Velocity- 3165 fps
Link Posted: 12/14/2017 8:14:57 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By MandPdude:
Here is what I got from Federals site for XM193:

BC-.246"

Muzzle Velocity- 3165 fps
View Quote
3165 seems optimistic for a 14.5" barrel

Here's a couple with yards instead of meters. Just keep in mind that this way the ranging is off by 10%. If you range a target at "500" with the reticle, it's at 500 meters/550 yards and you have to aim in between the 500 and 600 lines.

100y POI = POA
Attachment Attached File


300y POI = POA
Attachment Attached File
Link Posted: 1/27/2018 12:01:34 PM EST
Excellent work!  Thank you.

If you do another, how about a mil dot reticle?
Link Posted: 4/2/2018 11:25:54 AM EST
Bump
Link Posted: 5/16/2018 10:58:15 AM EST
Link Posted: 5/16/2018 11:04:05 AM EST
[Last Edit: 5/16/2018 11:05:14 AM EST by TxRabbitBane]
OP was a cool guy five years ago and I didn’t know.  Apparently he’s still a cool guy today.

Neat post.
Link Posted: 5/16/2018 11:40:45 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By TxRabbitBane:
OP was a cool guy five years ago and I didn’t know.  Apparently he’s still a cool guy today.

Neat post.
View Quote
Thanks. No idea it had been that long already.
Link Posted: 5/27/2018 8:07:25 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By CastorTroy:
Possible to get a 6.5 grendel 123gr SST @ 2350fps (.510 g1) with a 1-6 ACSS?
View Quote
123gr SST BC is really .462 G1.  Don't use .510 value.

123gr AMAX is .468 as well.

Of all the 123gr cup and core target bullets, the 123gr SMK and Scenar have the highest BCs at .522 and .527 respectively.

123gr BTHP Hornady American Gunner is .450 G1/.225 G7.

130gr Berger OTM Federal Gold Medal Match is .564 G1/.290 G7 Litz.

130gr Nosler RDF is .615 G1/.307 G7.
Link Posted: 5/27/2018 8:15:04 PM EST
Great thread by the way.  Not sure if I recall seeing it before.

Conditions will change everything, but it's still nice to have some references.

Here's where I was with a 12" Grendel using the GRSC 1-4x24 out to 800yds.

Red dot indicates POI at 6600ft elevation, 75°F.  I think I'm zero'd at 150yds after looking at the data when I got home.

Will be working more with these scopes.  Got the 1-6x Japanese Light Optical Works model in on Wed.

Impacts appeared to be dead-on out to 500yds.  I shot some close range steel with center holds no problems, even bowling pin sized steel within 200yds. Smack smack

Went out to 400yds, impact, impact.  500yds, impact, too easy.  800yds using the 600yd circle, was low, came up, impact, impact, impact, impact, boring.

Link Posted: 5/27/2018 8:58:50 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By LRRPF52:
123gr SST BC is really .462 G1.  Don't use .510 value.

123gr AMAX is .468 as well.

Of all the 123gr cup and core target bullets, the 123gr SMK and Scenar have the highest BCs at .522 and .527 respectively.

123gr BTHP Hornady American Gunner is .450 G1/.225 G7.

130gr Berger OTM Federal Gold Medal Match is .564 G1/.290 G7 Litz.

130gr Nosler RDF is .615 G1/.307 G7.
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By LRRPF52:
Originally Posted By CastorTroy:
Possible to get a 6.5 grendel 123gr SST @ 2350fps (.510 g1) with a 1-6 ACSS?
123gr SST BC is really .462 G1.  Don't use .510 value.

123gr AMAX is .468 as well.

Of all the 123gr cup and core target bullets, the 123gr SMK and Scenar have the highest BCs at .522 and .527 respectively.

123gr BTHP Hornady American Gunner is .450 G1/.225 G7.

130gr Berger OTM Federal Gold Medal Match is .564 G1/.290 G7 Litz.

130gr Nosler RDF is .615 G1/.307 G7.
.307 G7 is crazy. Do you know what the BCs for the below rounds are?

120 gr. Hornady GMX
140 gr. Hornady ELD-M
142 gr. Sierra MatchKing
Link Posted: 5/27/2018 9:00:49 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By LRRPF52:
Great thread by the way.  Not sure if I recall seeing it before.

Conditions will change everything, but it's still nice to have some references.

Here's where I was with a 12" Grendel using the GRSC 1-4x24 out to 800yds.

Red dot indicates POI at 6600ft elevation, 75°F.  I think I'm zero'd at 150yds after looking at the data when I got home.

Will be working more with these scopes.  Got the 1-6x Japanese Light Optical Works model in on Wed.

Impacts appeared to be dead-on out to 500yds.  I shot some close range steel with center holds no problems, even bowling pin sized steel within 200yds. Smack smack

Went out to 400yds, impact, impact.  500yds, impact, too easy.  800yds using the 600yd circle, was low, came up, impact, impact, impact, impact, boring.

http://i1085.photobucket.com/albums/j422/LRRPF52/3783a115-51d3-475a-bdc6-7ed239d6130d_zps0ulu9abi.jpg
View Quote
My dream would be being able to custom order a BDC reticle however you want it. Then no matter what bullet, velocity, elevation, or height over bore it will be on.
Link Posted: 5/31/2018 2:43:55 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By pezboytate:
.307 G7 is crazy. Do you know what the BCs for the below rounds are?

120 gr. Hornady GMX
140 gr. Hornady ELD-M
142 gr. Sierra MatchKing
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By pezboytate:
Originally Posted By LRRPF52:
Originally Posted By CastorTroy:
Possible to get a 6.5 grendel 123gr SST @ 2350fps (.510 g1) with a 1-6 ACSS?
123gr SST BC is really .462 G1.  Don't use .510 value.

123gr AMAX is .468 as well.

Of all the 123gr cup and core target bullets, the 123gr SMK and Scenar have the highest BCs at .522 and .527 respectively.

123gr BTHP Hornady American Gunner is .450 G1/.225 G7.

130gr Berger OTM Federal Gold Medal Match is .564 G1/.290 G7 Litz.

130gr Nosler RDF is .615 G1/.307 G7.
.307 G7 is crazy. Do you know what the BCs for the below rounds are?

120 gr. Hornady GMX
140 gr. Hornady ELD-M
142 gr. Sierra MatchKing
Hornady and Sierra publish those BCs, Hornady with doppler data across 3 different Mach bands, and Sierra across 3-4 different Mach bands as well.

120gr GMX is .450 G1 (very long bullet, solid construction)
140gr ELD-M .646 G1/.326 G7
142gr SMK .626 @ 2850 fps and above, .611 between 2400 and 2850 fps, .606 between 2050 and 2400 fps, .581 @ 2050 and below
Link Posted: 6/12/2018 9:51:49 PM EST
[Last Edit: 6/12/2018 9:58:13 PM EST by MSC182]
Any chance of getting one done with the Leupold FireDot Special Purpose reticle? I recently found a new range that has steel targets out at 300 and 400 yards which will be the furthest I’ve ever shot. Great thread by the way and thanks for all the work.



Ammo will be either M193 or M855 with a 100 yard zero

@pezboytate
Link Posted: 7/26/2018 6:03:59 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By MSC182:
Any chance of getting one done with the Leupold FireDot Special Purpose reticle? I recently found a new range that has steel targets out at 300 and 400 yards which will be the furthest I've ever shot. Great thread by the way and thanks for all the work.

https://www.AR15.Com/media/mediaFiles/189957/086149CF-B67B-4A1C-AADA-719196473715-574086.jpg

Ammo will be either M193 or M855 with a 100 yard zero

@pezboytate
View Quote
MK262 in a 11.5, 14.5 and 16" barrel would be great but you do what you can do! Thanks.
Link Posted: 7/26/2018 6:36:04 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By MSC182:
Any chance of getting one done with the Leupold FireDot Special Purpose reticle? I recently found a new range that has steel targets out at 300 and 400 yards which will be the furthest I’ve ever shot. Great thread by the way and thanks for all the work.

https://www.AR15.Com/media/mediaFiles/189957/086149CF-B67B-4A1C-AADA-719196473715-574086.jpg

Ammo will be either M193 or M855 with a 100 yard zero

@pezboytate
View Quote
I saw this when I was camping and forgot about it. I'll see what I can do.
Link Posted: 9/3/2018 8:33:49 AM EST
[Last Edit: 9/3/2018 8:37:15 AM EST by JLS81]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By JimboJones1:
Really is a fantastic thread.  Checking it out again as I had it bookmarked.
View Quote
Agreed! Most excellent work posted by @pezboytate.
Link Posted: 9/4/2018 10:50:54 PM EST
Consensus as to best way to zero my REPR 7.62?  I have a trijicon accupower 1-8x on it. Will be at the range this weekend.  Thanks.
Link Posted: 9/26/2018 12:27:43 PM EST
I'm going to zero my first 300 BLK (9.5" with iron sights) and am torn on 25, 50, or 100.

With supersonic ammo does anyone know where the crossovers are?  My goal will be to keep it as close to POA=POI as possible out to 75-100m max with zero care given for how it falls off afterwards.
Link Posted: 9/26/2018 4:50:34 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By 762AR25:
I'm going to zero my first 300 BLK (9.5" with iron sights) and am torn on 25, 50, or 100.

With supersonic ammo does anyone know where the crossovers are?  My goal will be to keep it as close to POA=POI as possible out to 75-100m max with zero care given for how it falls off afterwards.
View Quote
I'm not super familiar with 300 BLK so my numbers may be off.

For what you are looking for, you definitely don't want a 25 zero. 75 and 100 are very similar. They are basically a zero at the top of the arc so everything else will be low. You are going to hit height over bore distance low at the muzzle regardless of your zero distance. With a 50 zero you will hit dead on at 50, .5" high at 75 and 100, and then be back on at maybe 125.

If you tell me more about your MV, bullet, sight height, target size... I can give you more.
Link Posted: 9/26/2018 4:55:30 PM EST
[Last Edit: 9/26/2018 5:00:19 PM EST by 762AR25]
125 grain Hornady SST 2050 FPS
Sight height---running irons at standard height

The silhouettes on page 1 would be good, it will be used in a self defense role.

I was thinking about just doing 100yd.
Link Posted: 9/26/2018 8:39:43 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By 762AR25:
125 grain Hornady SST 2050 FPS
Sight height---running irons at standard height

The silhouettes on page 1 would be good, it will be used in a self defense role.

I was thinking about just doing 100yd.
View Quote
I don't want to thread jack at all, but based on a similar projectile (125gr Nosler BT) at 2100FPS, using the Point Blank program a 25yd zero gives a crossover again at 100yards with a 1.5" sight offset.  I use this on my own 300BLK and it is pretty close.   Consider it reference and not replacement for OP's better data.
Link Posted: 9/26/2018 9:20:00 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By jblomenberg16:
I don't want to thread jack at all, but based on a similar projectile (125gr Nosler BT) at 2100FPS, using the Point Blank program a 25yd zero gives a crossover again at 100yards with a 1.5" sight offset.  I use this on my own 300BLK and it is pretty close.   Consider it reference and not replacement for OP's better data.
View Quote View All Quotes
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Discussion ForumsJump to Quoted PostQuote History
Originally Posted By jblomenberg16:
Originally Posted By 762AR25:
125 grain Hornady SST 2050 FPS
Sight height---running irons at standard height

The silhouettes on page 1 would be good, it will be used in a self defense role.

I was thinking about just doing 100yd.
I don't want to thread jack at all, but based on a similar projectile (125gr Nosler BT) at 2100FPS, using the Point Blank program a 25yd zero gives a crossover again at 100yards with a 1.5" sight offset.  I use this on my own 300BLK and it is pretty close.   Consider it reference and not replacement for OP's better data.
If your optic is 1.5" over the rail, your line of sight is 2.75" over the bore.

This is what I got for 25y zero (guessed altitude at 750ft):
Attachment Attached File


50y:
Attachment Attached File


75y:
Attachment Attached File


100y:
Attachment Attached File


125y:
Attachment Attached File
Link Posted: 9/26/2018 9:22:11 PM EST
Didn't even think of altitude.  I'm at 2800'
Link Posted: 9/26/2018 9:52:10 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By 762AR25:
Didn't even think of altitude.  I'm at 2800'
View Quote
For the 0-150 it barely changes it.
Link Posted: 9/26/2018 10:24:55 PM EST
thanks.

Looks like 50yd it is....no more than an 1" off out to 100.
Link Posted: 9/26/2018 11:05:58 PM EST
[Last Edit: 9/26/2018 11:09:44 PM EST by DT120]
Awesome reference. Possible to get one with the TA44 circle dot reticle? Just wondering how the magnification works with different zeros. I dont know if holdovers would be the same for a 1X vs. a 1.5X
Link Posted: 9/27/2018 7:49:00 PM EST
Discussion ForumsJump to Quoted PostQuote History
Hmm...you bring up a good point...off to double check my numbers....
Link Posted: 11/24/2018 3:35:42 PM EST
BTT
Link Posted: 11/24/2018 4:14:00 PM EST
[Last Edit: 11/24/2018 4:14:31 PM EST by robertmegar]
Has anybody done holds for the KISS reticle on 1-6x PA scope? 25-300yds

55gr m193 16"  barrel Aero mount height in FL (low elevation).
Link Posted: 12/3/2018 12:35:10 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By DT120:
Awesome reference. Possible to get one with the TA44 circle dot reticle? Just wondering how the magnification works with different zeros. I dont know if holdovers would be the same for a 1X vs. a 1.5X
View Quote
@DT120

Sorry I never replied to this. I don't know the dimensions of that reticle. Hold overs will be the same, the size of the dot and circle will just be different than other reticles.
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