Calibrated Ballistics Turret is NOT Matching POI

[Ingwe]

I recently purchased a Calibrated Ballistic Turret, calibrated for my handload, for my Swarovski X5 Scope. Yesterday I got the chance to shoot long range, and I'm not too happy with the results.

Up to 300 yards the calibrations were DEAD ON but at 400 yards I found that I needed to use the 380 yard mark, since impact was 2"+- high using 400.

At 600 I used 560 mark, since impact was 10"+- high using 600.

At 800 I used 780 mark, since impact was 8"+- high using 800.

At 1,000 I used the 925 mark, impact 56"+- high using 1,000 mark. It should be noted that the 1,000 target was on an upward angle of about 40 degrees, so i'm not sure if actual distance is 1,000 yards....maybe less due to angle, so maybe it isn't off as much as it seems.

I do need to get out again to shoot again and proof these numbers but even still they are pretty far off of the calibrations on the turret.

I entered the ballistic data VERY CAREFULLY when I ordered the turret so I'm not sure what's going on here?

 

[SilverbulletMAG]

Did you verify velocity, B.C., drop before having the turrets made? What is your SD/ES on your handloads? If shooting at an angle, of course that will make a difference as well, as you pointed out. Lots of variables at play.

 

[MarkA]

Have you TALL target tested the scope to verify it IS dialing correct?

 

[cohunt]

did the weather or altitude change ?

one of the problems with ballistic turrets is they only work for 1 set of variables--generally i tell people that the ballistic turrets are only good for 3-400 yards

 

[CVCOBRA1]

Chrony your loads again and see if they match the stats that you sent in for your custom dials. My bet is that they don't.

 

[cohunt]

did you use advertised BC or actual/calculated BC? --lots of variables come into play here

 

[Ingwe]

All of the data I entered was checked and double checked, and I shot at the same elevation too.

I have a feeling that what Cohunt said here is correct with what he just posted and I read this opinion somewhere else too.

The turret isn't cheap so I'm a bit disappointed but I don't plan on shooting an animal past 400 yards anyway.

 

[Rflamm250]

When i have had turrets made i never order off chrono readings. I would get a perfect 200yrd zero, then shoot at 1000. Then adjust speed on calculator to match what the actual drop in minutes or mills were with that scope. It sounds like your shooting flatter than turret is set up for. Your barrel may have sped up? Temp could have some effect also but not 56"worth.

 

[Ingwe]

When i have had turrets made i never order off chrono readings. I would get a perfect 200yrd zero, then shoot at 1000. Then adjust speed on calculator to match what the actual drop in minutes or mills were with that scope. It sounds like your shooting flatter than turret is set up for. Your barrel may have sped up? Temp could have some effect also but not 56"worth.

Sounds like a great idea but a bit over my skill level to do that lol

I don't know....even if the temps were off, and the barrel did speed up, 56" is ALLOT.

 

[Canhunter35]

Did u use a g1 or g7?

 

[Ingwe]

Did u use a g1 or g7?

G7

 

[Remmy700]

As was mentioned earlier there are so many variables that go into an accurate ballistic turret. You have to stay around that altitude, that temp range, and most importantly have to keep your velocity in that range also. I tried them once but hunting here in mountains you don't know if you will get a shot at 7K ft or 11K ft. Your best bet is to simply dope your rifle, verify that dope and make the minor changes that is needed. I usually make numbers for say 6K feet and another for say 10K feet. And as I prepare for a hunt I will try to vary my altitude to see how those numbers correlate to all in between. IMHO that is the only way know exactly what your rifle will do in all the varying conditions.

 

[bigngreen]

The thing with ordering turrets is setting them up is the same work as setting up any other ballistic solution. They work very well out the 600 ish range then you gotta start thinking just a little. I'm minute of coyote all year long to 600 with no issues and it's a fast solution but for long range shooting nothing should replace a real-time dialed solution!!

 

[Ingwe]

The thing with ordering turrets is setting them up is the same work as setting up any other ballistic solution. They work very well out the 600 ish range then you gotta start thinking just a little. I'm minute of coyote all year long to 600 with no issues and it's a fast solution but for long range shooting nothing should replace a real-time dialed solution!!

I agree. Seems that I would be minute of coyote up to 500 (still have to shoot at 500 so guessing here) and past that be mindful of change.

Again, I still have to shoot the turret more but this is how it looks right now.