Kestrel, Trued perfectly to 700, then way high at 800 ///// SEE LAST POST

Dead Eye Dick

Dead Eye Dick

Command Spec 4 (formally known as Wiillk)
Full Member
Minuteman
Supporter
May 18, 2020
4,110
13,033
North Louisiana
#1
First, I have searched the site multiple times and not finding an answer.

Problem, set MV and G7 profile to match 300, 400, 500, 700 perfectly. 800 shots dead center of IPCS silhouette (blue line dead center) at 5.3 mils. No matter what I do, or how I work it, the Kestrel sets at 5.62. Naturally my range finder will not range that far (money is adding up in savings for one that will so having to depend of the range’s range card). (True Velocity is 2890 FPS and True G7 BC is 0.275 Kestrel agrees with dope at 300, 400, 500 and 700 yards with 2830 FPS and G7 0.285).

Is there an issue with the way I am adjusting the Kestrel or possibly the 800 yard target is set at 775 yards true (which according to the Kestrel is 5.3 mils?
 
Last edited:
#3
dirtybores said:
Could you laser the 400 to confirm then walk down and laser the 800 to confirm its 400 more? A profile that trued out shouldn't be that far off at only one distance. An errant data entry should have showed up at 700 too I would think.
Click to expand...
On a good day it might, but we are talking Altus, and walking down range shuts down a lot of shooters, over potentially seven different ranges. Great idea, but i can’t see really being able to do it.
 
#4
Could they provide accurate target dimensions to Mil it? I fuss with minor Kestrel settings alot just to see what happens. At supersonic distances with a trued BC and chrono MV, or even advertised BC and MV adjusted by CalMV, its rarely off more than a tenth and a half. I'd vote for its an actual distance issue. Maybe a more experienced Kestrel person will weigh in.
 
#5
Dead Eye Dick said:
First, I have searched the site multiple times and not finding an answer.

Problem, set MV and G7 profile to match 300, 400, 500, 700 perfectly. 800 shots dead center of IPCS silhouette (blue line dead center) at 5.3 mils. No matter what I do, or how I work it, the Kestrel sets at 5.62. Naturally my range finder will not range that far (money is adding up in savings for one that will so having to depend of the range’s range card). (True Velocity is 2890 FPS and True G7 BC is 0.275 Kestrel agrees with dope at 300, 400, 500 and 700 yards with 2830 FPS and G7 0.285).

Is there an issue with the way I am adjusting the Kestrel or possibly the 800 yard target is set at 775 yards true (which according to the Kestrel is 5.3 mils?
Click to expand...
What's the rest of the info so a sanity check can be made? Bullet weight, sight height, environmental data etc.
 
#8
The c8 at Altus is pretty close to 806. c9 is more like 838.

I’d delete the profile and start over.

Zero at 100, put your mv in, and then true at 800+. Don’t futz with bc inside of 800, just mv. Published bc’s are pretty close now and inside of 1k or so they don’t need much adjustment at all. Just muzzle velocity.

The problem with what you have now is there are two variables being adjusted that each change the math equation being output. Just use mv.
 
#9
Put the basic data into a "basic" ballistics calculator, then true it the same way you think you did your kestrel. In my experience, theres's basically no way a modern solver--even a simple one-- will be accurate at 300,400,500,600,700 and then be off at 800.


You can also use mark and franks gravity ballistics worksheet to calculate dope at distance N+1 from verified dope at distance N. The point is basically the same as above. There's really no way to screw up the modeling of 800 if your data at 700 is good.

Its almost surely some kind of data entry gremlin in your AB software (ie, on one of the underlying varriables).

Theres an interesting podcast with some of the ELR guys, what they do to avoid this kind of problem is they run 2-3 different devices, so, they can verify the output running it through another AB solver. The second and third solvers inputs are "known good" and haven't been inadvertencly changed by all of the key-pressing that is typical with your main device/kestrel.
 
Last edited:
#13
Gentleman, I am not responding to any questions or remarks. Been on the road all day as we had a family emergency. I was in Florida, and My Brenda, who was back in Louisiana fell and broke her hip. surgery tomorrow. Not ignoring you, it’s been one hell of a day.

Thanks for the responses.
 
#14
Ok, Brenda’s home, spent the morning with the case manager from home health, (spent a large part of both of our lives being case managers for people with Mental Retardation it was sorta like old times). Brenda is up and walking with a walker, but not doing much else. I am the househusband and I might add, not measuring up too well, but we are surviving.

Caveat. I own two 6GT rifles with MPA chassis. One is a gray chassis which originally was chambered in 6.5 Creedmoor, and the second is a Tiger Striped chassis that has always been in 6GT. The Tiger started out being a real issue but is NOW my goto rifle, and the Kestrel and it agree on every range and every distance that I can find targets to shoot at. The issue is the Gray Rifle.

IMG_1080.jpeg


Here is the data from Tuesday.

1. There are no chronographed velocities for this day. For once, I was having issues with the Labradar (our son had changed settings and I was not aware). So, one of my main plans on Tuesday was to chrono the Gray 6GT and the Vudoo. Did not happen. However, while attempting to get the Chrono to give me velocities on the gray rifle, it shot a pretty good, well under Sub MOA, group that was more than three shots. So, it can shoot.

2. So, I shot some practice stages, had a good time, tried to stay cool, was having issues with the Gray Rifle hitting the extreme long range targets. Otherwise, the rifle is not having issues hitting targets.

3. I moved to the ABC range at Altus. The C range has targets from 200 yards out to 840 yards and all are backed by plain dirt backdrops and thus it is easy to spot missies.

I decided to use the old fashioned way of sighting it in out to 800 yards. I used the Kestrel data for the Tiger Rifle and adjusted accordingly. Be it scope difference (both MK5HD’s in 5x25 with PR2 MIL reticles) or sight in differences (sighting in a Top Shot at Hodge does some very funny things to rifles) or barrel differences, the data does not agree, thus requiring the creation of a second gun in the Kestrel. The chamber throat on the Gray rifle is markedly different from the Tiger Rifle having a much tighter throat.

So, it took very little time. There was a strong crosswind component which was the most difficult issue of the day. But reading wind, is my specialty.

300 1.0mil
400 1.7mil
500 2.5mil
700 4.5mil
800 5.3mil

The Kestrel agrees with every sight mark except 800. At 800 it calls for 5.8mils which basically puts the round above the shoulder/head of a silhouette target. Won’t work. 5.3 mils with a .25 wind hold put the round hit in the center of the blue line , in the center of the silhouette. My written notes simply states; Pefect!

Environmental data

Taken at 7:47AM
Wind WSW 3.7 - 5.0mph and gusts were much higher
Temperature 83.2F
Humidity 81.2%
Barometric Pressure 29.86inHg
Density Altitude 2030

Normally I take a second reading as the day goes on but on Tuesday I did not. The high temperature that day was around 90. Had I planned on staying longer, I would have taken a second reading, however, I left the range by 11:00 accomplishing all I could and heeding the warning of my dear Brenda to not get too hot. (75 years will do that to a fellow)

That evening, i decided to backdoor the Kestrel. Without MV I started out creating a new rifle in the Kestrel, using the data for the Tiger rifle and worked backwards, using velocity changes to true the Kestrel to the elevation used to achieve hits. No problem to 700 yards. A very good match I might add. As stated above, if the target was set at 775 yards, the Kestrel would be perfect. Another shooter ranged the 600 yard target at 550 yards on the Sunday previous so target setting error could be a possibility. However, the Kestrel and the Tiger rifle agree at 800.

DATA

Round 6GT

GA/Hornady brass

Varget 34.5 grains, each charge individual measured on beam scale
Scale verified by scale check weights before each reloading session

CCI 450 SRM primer

Berger 105gr Hybrid

Barrel Length 26 inches MTU profile

MPA brake

Barrel has 843 rounds
Rifle had been regulated to practice status. Tiger Rifle has demonstrated better grouping. However, the Tiger’s barrel is getting a bit long in the tooth.

Old style MPA BA chassis. Trigger Tech Special trigger, MPA/Curtis action, Leupold MK5HD, in Leupold rings. Atlas bipod, and using a Game Changer waxed bag, reduced fill. Rifle weight 18.0 pounds.

Main difference, the Tiger has an ESR chassis, a Trigger Tech Diamond trigger and using an Area 419 ARCA mount for the Atlas Bipod.

Final note, the picture is using a different bag, the picture was taken last summer on the day that barrel was first shot
 
Last edited:
#15
Dead Eye Dick said:
Ok, Brenda’s home, spent the morning with the case manager from home health, (spent a large part of both of our lives being case managers for people with Mental Retardation it was sorta like old times). Brenda is up and walking with a walker, but not doing much else. I am the househusband and I might add, not measuring up too well, but we are surviving.

Caveat. I own two 6GT rifles with MPA chassis. One is a gray chassis which originally was chambered in 6.5 Creedmoor, and the second is a Tiger Striped chassis that has always been in 6GT. The Tiger started out being a real issue but is NOW my goto rifle, and the Kestrel and it agree on every range and every distance that I can find targets to shoot at. The issue is the Gray Rifle.

View attachment 8458190

Here is the data from Tuesday.

1. There are no chronographed velocities for this day. For once, I was having issues with the Labradar (our son had changed settings and I was not aware). So, one of my main plans on Tuesday was to chrono the Gray 6GT and the Vudoo. Did not happen. However, while attempting to get the Chrono to give me velocities on the gray rifle, it shot a pretty good, well under Sub MOA, group that was more than three shots. So, it can shoot.

2. So, I shot some practice stages, had a good time, tried to stay cool, was having issues with the Gray Rifle hitting the extreme long range targets. Otherwise, the rifle is not having issues hitting targets.

3. I moved to the ABC range at Altus. The C range has targets from 200 yards out to 840 yards and all are backed by plain dirt backdrops and thus it is easy to spot missies.

I decided to use the old fashioned way of sighting it in out to 800 yards. I used the Kestrel data for the Tiger Rifle and adjusted accordingly. Be it scope difference (both MK5HD’s in 5x25 with PR2 MIL reticles) or sight in differences (sighting in a Top Shot at Hodge does some very funny things to rifles) or barrel differences, the data does not agree, thus requiring the creation of a second gun in the Kestrel. The chamber throat on the Gray rifle is markedly different from the Tiger Rifle having a much tighter throat.

So, it took very little time. There was a strong crosswind component which was the most difficult issue of the day. But reading wind, is my specialty.

300 1.0mil
400 1.7mil
500 2.5mil
700 4.5mil
800 5.3mil

The Kestrel agrees with every sight mark except 800. At 800 it calls for 5.8mils which basically puts the round above the shoulder/head of a silhouette target. Won’t work. 5.3 mils with a .25 wind hold put the round hit in the center of the blue line , in the center of the silhouette. My written notes simply states; Pefect!

Environmental data

Taken at 7:47AM
Wind WSW 3.7 - 5.0mph and gusts were much higher
Temperature 83.2F
Humidity 81.2%
Barometric Pressure 29.86inHg
Density Altitude 2030

Normally I take a second reading as the day goes on but on Tuesday I did not. The high temperature that day was around 90. Had I planned on staying longer, I would have taken a second reading, however, I left the range by 11:00 accomplishing all I could and heeding the warning of my dear Brenda to not get too hot. (75 years will do that to a fellow)

That evening, i decided to backdoor the Kestrel. Without MV I started out creating a new rifle in the Kestrel, using the data for the Tiger rifle and worked backwards, using velocity changes to true the Kestrel to the elevation used to achieve hits. No problem to 700 yards. A very good match I might add. As stated above, if the target was set at 775 yards, the Kestrel would be perfect. Another shooter ranged the 600 yard target at 550 yards on the Sunday previous so target setting error could be a possibility. However, the Kestrel and the Tiger rifle agree at 800.

DATA

Round 6GT

GA/Hornady brass

Varget 34.5 grains, each charge individual measured on beam scale
Scale verified by scale check weights before each reloading session

CCI 450 SRM primer

Berger 105gr Hybrid

Barrel Length 26 inches MTU profile

MPA brake

Barrel has 843 rounds
Rifle had been regulated to practice status. Tiger Rifle has demonstrated better grouping. However, the Tiger’s barrel is getting a bit long in the tooth.

Old style MPA BA chassis. Trigger Tech Special trigger, MPA/Curtis action, Leupold MK5HD, in Leupold rings. Atlas bipod, and using a Game Changer waxed bag, reduced fill. Rifle weight 18.0 pounds.

Main difference, the Tiger has an ESR chassis, a Trigger Tech Diamond trigger and using an Area 419 ARCA mount for the Atlas Bipod.

Final note, the picture is using a different bag, the picture was taken last summer on the day that barrel was first shot
Click to expand...
Scope height over bore for both?
 
#16
FWIW, I'm going with the target was really at 775. JBM using your real velocity and BC matches up with what you saw.

Code: 
Trajectory
Input Data
Manufacturer:     Berger     Description:     Target Hybrid
Caliber:     0.243 in     Weight:     105.0 gr
Ballistic Coefficient:     0.275 G7 (ICAO)         
Muzzle Velocity:    2890.0 ft/s    Distance to Chronograph:    0.0 ft
Sight Height:    2.00 in    Sight Offset:    0.00 in
Zero Height:    0.00 in    Zero Offset:    0.00 in
Windage:    0.000 MOA    Elevation:    0.000 MOA
Line Of Sight Angle:    0.0 deg    Cant Angle:    0.0 deg
Wind Speed:    10.0 mph    Wind Angle:    90.0 deg
Target Speed:    10.0 mph    Target Angle:    90.0 deg
Target Height:    12.0 in       
Temperature:    83.2 °F    Pressure:    29.56 in Hg
Humidity:    81 %    Altitude:    1000.0 ft
Vital Zone Radius:    5.0 in       
Std. Atmosphere at Altitude:    No    Pressure is Corrected:    No
Zero at Max. Point Blank Range:    No    Target Relative Drops:    Yes
Mark Sound Barrier Crossing:    No    Include Extra Rows:    No
Column 1 Units:    1.00 in    Column 2 Units:    1.00 MIL
Round Output to Whole Numbers:    No       
Output Data
Elevation:    3.974 MOA    Windage:    0.000 MOA
Atmospheric Density:    0.07132 lb/ft³    Speed of Sound:    1142.2 ft/s
Maximum PBR:    362 yd    Maximum PBR Zero:    308 yd
Range of Maximum Height:    172 yd    Energy at Maximum PBR:    1262.4 ft•lbs
Sectional Density:    0.254 lb/in²       
Calculated Table
Range    Drop    Drop    Windage    Windage    Velocity    Mach    Energy    Time    Lead    Lead
(yd)    (in)    (MIL)    (in)    (MIL)    (ft/s)    (none)    (ft•lbs)    (s)    (in)    (MIL)
0     -2.0     ***     0.0     ***     2890.0     2.530     1946.9     0.000     0.0     ***
25     -1.1     -1.2     0.0     0.0     2849.0     2.494     1892.1     0.026     4.6     5.2
50     -0.4     -0.3     0.1     0.1     2808.4     2.459     1838.5     0.053     9.3     5.2
75     -0.1     -0.0     0.3     0.1     2768.0     2.423     1786.0     0.080     14.0     5.3
100     -0.0     -0.0     0.5     0.2     2727.9     2.388     1734.7     0.107     18.8     5.3
125     -0.2     -0.0     0.8     0.2     2688.2     2.353     1684.5     0.135     23.7     5.4
150     -0.7     -0.1     1.2     0.2     2648.7     2.319     1635.4     0.163     28.6     5.4
175     -1.5     -0.2     1.7     0.3     2609.6     2.285     1587.5     0.191     33.6     5.4
200     -2.7     -0.4     2.2     0.3     2570.8     2.251     1540.6     0.220     38.7     5.5
225     -4.1     -0.5     2.8     0.4     2532.3     2.217     1494.8     0.250     43.9     5.5
250     -5.9     -0.7     3.5     0.4     2494.1     2.183     1450.1     0.279     49.2     5.6
275     -8.1     -0.8     4.3     0.4     2456.3     2.150     1406.4     0.310     54.5     5.6
300     -10.6     -1.0     5.1     0.5     2418.7     2.118     1363.7     0.340     59.9     5.7
325     -13.5     -1.2     6.0     0.5     2381.5     2.085     1322.1     0.372     65.4     5.7
350     -16.8     -1.4     7.1     0.6     2344.7     2.053     1281.5     0.403     71.0     5.7
375     -20.4     -1.5     8.2     0.6     2308.2     2.021     1241.9     0.436     76.7     5.8
400     -24.5     -1.7     9.4     0.7     2272.0     1.989     1203.3     0.468     82.4     5.8
425     -29.0     -1.9     10.7     0.7     2236.2     1.958     1165.7     0.502     88.3     5.9
450     -33.9     -2.1     12.0     0.8     2200.7     1.927     1129.0     0.536     94.2     5.9
475     -39.3     -2.3     13.5     0.8     2165.6     1.896     1093.2     0.570     100.3     6.0
500     -45.1     -2.6     15.1     0.9     2130.8     1.865     1058.4     0.605     106.4     6.0
525     -51.5     -2.8     16.8     0.9     2096.3     1.835     1024.4     0.640     112.7     6.1
550     -58.3     -3.0     18.6     1.0     2062.1     1.805     991.2     0.676     119.0     6.1
575     -65.6     -3.2     20.4     1.0     2028.2     1.776     958.9     0.713     125.5     6.2
600     -73.4     -3.5     22.4     1.1     1994.6     1.746     927.4     0.750     132.1     6.2
625     -81.8     -3.7     24.5     1.1     1961.2     1.717     896.6     0.788     138.7     6.3
650     -90.8     -4.0     26.8     1.2     1928.2     1.688     866.7     0.827     145.5     6.3
675     -100.3     -4.2     29.1     1.2     1895.4     1.659     837.4     0.866     152.4     6.4
700     -110.5     -4.5     31.6     1.3     1862.8     1.631     808.9     0.906     159.4     6.4
725     -121.3     -4.7     34.1     1.3     1830.5     1.603     781.1     0.947     166.6     6.5
750     -132.7     -5.0     36.8     1.4     1798.5     1.575     754.0     0.988     173.9     6.6
775     -144.8     -5.3     39.7     1.4     1766.7     1.547     727.6     1.030     181.3     6.6
800     -157.6     -5.6     42.7     1.5     1735.2     1.519     701.9     1.073     188.8     6.7
825     -171.1     -5.9     45.8     1.6     1703.9     1.492     676.8     1.116     196.5     6.7
850     -185.4     -6.2     49.0     1.6     1672.8     1.465     652.3     1.161     204.3     6.8
875     -200.4     -6.5     52.4     1.7     1642.0     1.438     628.5     1.206     212.3     6.9
900     -216.2     -6.8     56.0     1.8     1611.4     1.411     605.3     1.252     220.4     6.9
925     -232.9     -7.1     59.7     1.8     1581.1     1.384     582.7     1.299     228.7     7.0
950     -250.5     -7.5     63.5     1.9     1551.0     1.358     560.8     1.347     237.1     7.1
975     -268.9     -7.8     67.6     2.0     1521.2     1.332     539.4     1.396     245.7     7.1
1000     -288.3     -8.2     71.8     2.0     1491.6     1.306     518.6     1.446     254.5     7.2
13-Jul-24 13:13, JBM/jbmtraj-5.1.cgi
 
  • Love
Reactions: Dead Eye Dick
#18
Taylorbok said:
@Dead Eye Dick we still have no idea how far that target is, you gotta start there.

You can buy a LRF that'll range it for a couple hundred bucks, that's about 100 rounds of ammo give or take
Click to expand...

Well actually I can’t. For most people, that would work fine. But the tremors in my hand makes holding any handheld range finder a waste of time and battery.. Several years ago, my wife purchased a handheld rf. I try to use it, but even with supporting it with a bag, makes it not much good past 300 yards and that’s a stretch.

In the planning works and the money is being acquired, a combination binoculars / Range finder, that can be tripod mounted is in the works. My very next expenditure.

My move to Precision Rifle, the use of bags and bipods and supports allows me to continue to shoot and have fun doing it. Even if Handgun Silhouette was not dying, for me, the fun was gone. Holding the position and shooting had become something i could not do anymore with any degree of accuracy. While I hardly expect to place in any match I shoot in, I do want to be able to hit some targets. And Precision Rifle gives me the way to do that.

It’s a good thought though and thanks for the consideration.
 
Last edited:
  • Like
Reactions: Taylorbok
#19
6.5SH said:
Scope height over bore for both?
Click to expand...
I have not measured this, but both rifles have the same action and both rifles have Leupold MK4 high rings. These ring’s height is not optimal. When I was putting together the Gray rifle several years ago,, we were in the midst of the covid panic and these were the only rings I could find. So, because I wanted the Tiger rifle to match the Gray rifle as closely as possible I again used the same rings. When I built the Vudoo, I used extra high rings which work much better.

Ironically,, the ESR was introduced after I ordered and MPA sent that chassis. No problems with it except, Ironically, its adjustment does not match the BA and as I learned, the adjustment is different in both chassis.
 
#20
Dead Eye Dick said:
Well actually I can’t. For most people, that would work fine. But the tremors in my hand makes holding any handheld range finder a waste of time and battery.. Several years ago, my wife purchased a handheld rf. I try to use it, but even with supporting it with a bag, makes it not much good past 300 yards and that’s a stretch.

In the planning works and the money is being acquired, a combination binoculars / Range finder, that can be tripod mounted is in the works. My very next expenditure.

My move to Precision Rifle, the use of bags and bipods and supports allows me to continue to shoot and have fun doing it. Even if Handgun Silhouette was not dying, for me, the fun was gone. Holding the position and shooting had become something i could not do anymore with any degree of accuracy. While I hardly expect to place in any match I shoot in, I do want to be able to hit some targets. And Precision Rifle gives me the way to do that.

It’s a good thought though and thanks for the consideration.
Click to expand...
I run sig 10k and they are the sweetest piece of gear. If you wanna run a handheld unit there are several files available to 3d print a mount that can go on a tac table or have arca mount to go on tripod. I’ve got a buddy who runs his spotter with an sig 8k and reticles are aligned that’s a sweet set up also
 
#23
Problem, set MV and G7 profile to match 300, 400, 500, 700 perfectly. 800 shots dead center of IPCS silhouette (blue line dead center) at 5.3 mils. No matter what I do, or how I work it, the Kestrel sets at 5.62.
Click to expand...


1720928814421.png


OK. Let me see if I got this right.

Here's a basic ballistics model that works to replicate OP's Kestrel

... 105 berger 2825 fps, 83˚F wind 8mph ~4mph

At this speed, all drops are ~correct out to 700yds...
and

the ∆ dope from 700 to 800 is modeled as ∆ 1.1 mils.
op reports actual dope at 800 is 5.3 mils...off by 0.3

IPSC target at 800 is .8 mills to the shoulder, 1/2 torso of this target is .4 mils to shoulder from waterline.
OP is projected to hit IPSC .1 mil from top of IPSC shoulder...

In other words,...everything is as reported...

Is anything wrong with my data entry / model assumptions?
 
#25
Cynical said:
Assumption, but he said he went to the “abc” range and of those the c range is the only one with 100 berms going out to 800. 👍🏼
Click to expand...
You have assumed correctly. The “C” range has markings for every target, AND by each shooting area on the ABC range, there is a sign giving the ranges to each target with the corresponding signs by each target.

I could not find a good picture of C range but each target is marked and on the range by each target berm is a large sign listing the target which corresponds to the sign.

C1 - 200
C2 - 300
C4 - 400
C5 - 500
C7 - 700
C8 - 800
C9 - 900

IMG_3679.jpeg


IMG_3678.jpeg


AND I was shooting at the “C” range. (But often for fun take on A and B ranges. C is pretty much a long range dope check range.

Below is my fun range. Shooting off a fence post, it also goes to 800. Closest target in the picture is 300.

1720979476326.jpeg


This is an older picture. It is no longer marked, making it an unknown distance range,, but I got it memorized. Heck, I could eat this with a spoon :D
 
#26
Y’all let’s put this post to bed, we covered all the ground that can be covered and repeated most of it more than once. I am starting to have to answer answers to answers.

Nothing really more to say.

EXCEPT, I do appreciate the replies, suggestions and thoughts. Thank you to all
 
#27
Dead Eye Dick said:
Well actually I can’t. For most people, that would work fine. But the tremors in my hand makes holding any handheld range finder a waste of time and battery.. Several years ago, my wife purchased a handheld rf. I try to use it, but even with supporting it with a bag, makes it not much good past 300 yards and that’s a stretch.

In the planning works and the money is being acquired, a combination binoculars / Range finder, that can be tripod mounted is in the works. My very next expenditure.

My move to Precision Rifle, the use of bags and bipods and supports allows me to continue to shoot and have fun doing it. Even if Handgun Silhouette was not dying, for me, the fun was gone. Holding the position and shooting had become something i could not do anymore with any degree of accuracy. While I hardly expect to place in any match I shoot in, I do want to be able to hit some targets. And Precision Rifle gives me the way to do that.

It’s a good thought though and thanks for the consideration.
Click to expand...
Run the Sig range finders. They come with a tripod mount. You can aim them at the target, and then activate the laser remotely through the app so it doesn't move when targeting.
 
  • Like
Reactions: Taylorbok
#28
DocUSMCRetired said:
Run the Sig range finders. They come with a tripod mount. You can aim them at the target, and then activate the laser remotely through the app so it doesn't move when targeting.
Click to expand...
We own a sig range finder and on a good day it can sorta range a SCHOOL BUS at 400 yards.
 
Last edited:
#30
Apoligize to all, Trying to get and keep Brenda squared away with her needs (and she is being nice about it) and making, keeping up with appointments and everything else has got me more than a bit frazzled this morning.

Below is what I really, really, really need, but don’t know when it’s going to happen

IMG_2025.jpeg


Top Shot Range at hodge. Rail is 150 meters, target set approximately 150 yards. Vudoo nailed it. Several shots off of a bag, not a bench.
IMG_1450.jpeg
 
Last edited:
#31
Taylorbok said:
We'd all sleep better if you found your issue. LOL
Click to expand...
The question is really, how fast do you need to shoot 105 hybrid
to get a ∆ .8 dope from 700 to 800 yds at 200ft asl?

It would appear to be more tha 3000 fps,
which is way off OP's assumption of 2830.

when modeled with 200 ft asl, first of all, the correct altitude for Altus
it looks like you would need 2925 mv to get 5.3 at 800.

But doing this...still gives you a 1.1 jump from 700 to 800 (4.2 to 5.3),
which simply pushes the error to the 700 yard line.

OPs verified 700 yd dope would be .3 high,
ie if he was actually running this fast,
or in other words, would be the same observable problem
he discussed at 800 yds...
a high hit on IPSC or flying over 2moa circle, etc.

TLDR to hit 800 at 5.3, he needs to be going way faster than his 700 dope,
however this 'higher' speed will work OK for his 3,4,500 yd confirmations.

AltitudeDope 105 berger 2925
200 feetActualModelModel ∆
3001.00.9-0.1
4001.71.6-0.1
5002.52.4-0.1
600
7004.54.2-0.3
8005.35.30.0

(the .1 model error is easily within measurement or zero range, light effects etc)
 
  • Like
Reactions: Taylorbok
#32
There is another issue in this matter. It may be two or more months before I am able to go to a range that offers an 800 yard target. The best I can hope for is Prince, with a max range of 745 yards.

Brenda has been given a two month recovery. Even getting to Prince will be a stretch for a while. I am afraid this is starting to become a moot point for the foreseeable future. I am hoping, I can get across the road by the end of the week or early next week to shoot my Vudoo. (And if you are wondering, I was unable to chrono it but by backdoor truing, the Kestrel is spot on with the Vudoo out to 300 yards.). Just one more day at Altus would have answered a lot of questions.

I am really hoping she will be well enough to go to Florida with me in September for the match at Altus. But only time will tell. At least I can go over to the oil field before hunting season and shoot some .22\

Our little .22 range. Max distance 117 yards, white is for the Vudoo, black is for the Brenda’s Ruger American. On this date, targets were set no further than 100 yards. Not great but better than nothing.

IMG_1459.jpeg
 
You must log in or register to reply here.

Similar threads

B
Truing 308 Gasser, bc vs. mv help
Replies
2
Views
195
brutus1776
B
FourT6and2
Help Interpreting DOPE
Replies
9
Views
444
Makinchips208
Makinchips208
Milirad
Rifle Scopes Burris Eliminator 6 Accuracy Range Test Review
Replies
19
Views
5K
Eric B.
E
L
nominal but fat chamber reloading
Replies
10
Views
231
45-90
4
ychen
1-8 LVPO or 2-10 MVPO for ar15?
Replies
34
Views
4K
Keith E.
K
Top Bottom
Back
Home
Forums
Merch
Alerts