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  1. BryanLitz

    Range Report JBM dope card is screwing with me. Starting to get frustrated! What am I missing!?!

    When I see this problem, the first thing I think of is verifying range. Here's why; you're spot on at the closer ranges where the targets are within the beam divergence of your LRF. Spot on at 700 and 800 yards with the same trajectory model rules out a lot of things including scope tracking...
  2. BryanLitz

    Range Report Truing Ballistics question....

    For clarity, The tall target test isn't the same as a box test. The tall target test measures how much your scope *actually* moves the reticle compared to how much you dial. So if you dial 30 MOA at 100 yards, you would expect the POI to move 31.41". If the groups move more or less than...
  3. BryanLitz

    Range Report Truing Ballistics question....

    I highly suspect it's scope tracking error in this case, and not a ballistic calibration issue. In the case of your 600 yard dope, the error is 13.25/15=0.88 In the case of your 1000 yard dope, the error is 31.5/35=0.9 It seems like your scope is moving about 11% too much (assuming...
  4. BryanLitz

    Rifle Scopes Tall Target Test. Check my math.

    Thanks for the comments guys. powereng, If I were you, I wouldn't send the scope back. I would keep it and remember to apply the CF to all predicted drop numbers. In fact I have a number of scopes that need CF's applied. It's not such a bad thing as long as you manage it. The only thing I...
  5. BryanLitz

    Rifle Scopes Tall Target Test. Check my math.

    You're calculating the expected POI shift correctly (that's the hard part). But you're doing the actual correction factor wrong. The correction factor is Expected/actual So in your 10 MIL example, the expected POI shift is 38.73", and actual is 41.625". The correction factor in that case is...
  6. BryanLitz

    Twist rates- Faster is better!

    Faster than necessary twist rates have many effects, but most are subtle. Something like a 1:8" .308 Win shooting 175's can produce very slightly higher BC's thru supersonic (on the order of 1%), and noticeably higher BC's thru transonic (I've measured greater than 5% difference going from...
  7. BryanLitz

    Range Report How accurate is your chrono??--

    Most chronographs are capable of measuring velocity spread and SD pretty good. This is good for load development when you're measuring consistency. However, most chronographs are not good at measuring the true average velocity. For example, it's common for a chronograph to say your MV is 3000...
  8. BryanLitz

    Range Report Applied Ballistics Mobile App

    pd, Thank you for the info. We'll add this reticle to the list for development. -Bryan
  9. BryanLitz

    Range Report Applied Ballistics Mobile App

    pd, Can you clarify how the NP-R1 reticle is different in your 3.5-15? Are you referring to the version of the reticle in a first focal plane scope (NP-RF1)? If this is the case, then you can use the existing NP-R1 reticle in the app and set the scope magnification preferences to 'first focal...
  10. BryanLitz

    Range Report eBook version of "Accuracy and Precision for Long Range Shooting" now available

    Yes, in fact sharing ePub files is easy. We do this with articles currently. The problem is security. Digital Rights Management (DRM) is the encryption which prevents eBooks from being freely shared, and that's what Amazon provides (security). Without DRM, you can expect to sell about 10...
  11. BryanLitz

    Range Report eBook version of "Accuracy and Precision for Long Range Shooting" now available

    I respect your thoughts about price. Consider the following; It's cost over $30,000 to create this eBook. Amazon keeps 65% of the sale price. If we sold it for a much lower price, it wouldn't be economically viable to do it at all. Not all eBooks are this costly to create. Books which have...
  12. BryanLitz

    The best chronograph

    Magneto speed is difficult to beat in terms of accuracy and ease of use. The one compromise is that IF you're using it while load developing or zeroing, it MIGHT affect your group size or POI. However in my use of it, these concerns have been non-issues. The accuracy and ease of use easily...
  13. BryanLitz

    Heaviest 30 cal. round (High BC) for the 308 Winchester in a Semi-Auto??

    "Magazine length" will constrain the weight/length of the bullet you can use practically. The .308 Win is highly versatile, and if you can throat out a chamber and single load rounds, you can shoot the longest/heaviest (230/240 grain) bullets well. But these will be seated way WAY beyond...
  14. BryanLitz

    Range Report Applied Ballistics Kestrel; Pro staff support thread

    Short answer, No. We've supported this feature in other apps and the result is that it highly complicates things for the user and often causes bad solutions due to being mis-used. The best way to address this problem is to avoid it. The way you avoid it is by zeroing short (100 yards or...
  15. BryanLitz

    Range Report Applied Ballistics Kestrel; Pro staff support thread

    Farmer B, Thank you for your review and suggestions. We do plan on continuing to develop this tool and your suggestions will be addressed. Currently we're all attending SHOT show in Las Vegas thru Friday (17 Jan) so we won't be able to get in it right away, but it is on the 'todo' list. Take...
  16. BryanLitz

    Range Report eBook version of "Accuracy and Precision for Long Range Shooting" now available

    Applied Ballistics is proud to announce the release of its first eBook. Accuracy and Precision for Long Range Shooting is now available in electronic format for both Kindle and Nook eReaders. iPad users can use the Kindle app to access the eBook. Since its release in 2012, the hardcopy...
  17. BryanLitz

    Range Report Applied Ballistics Mobile App

    JB, You're not missing something here, this is an error in the instruction manual. There is no such place on the web where you can go to view or manually edit your profiles. The websync is more of a 'cloud' back-up. I'll go fix that in the instructions now. Glad to hear you like the new...
  18. BryanLitz

    Range Report New Applied Ballistics website

    Glock, Thanks for the heads up on the wind units, we'll get that fixed asap. The request for an iOS version of AB Mobile is very common, and I'm happy to say we're getting close. Here's some screenshots of the test version: <img src="http://69.195.124.135/~appliem5/Images/one.png"><img...
  19. BryanLitz

    Range Report New Applied Ballistics website

    I'm not sure I understand your question.... Any decent ballistic solution accounts for MV and BC as entirely separate things. A bullet with a given BC can be fired at any velocity, and the ballistic program accounts for that. If that doesn't help, please elaborate on your question. Thanks...
  20. BryanLitz

    Range Report New Applied Ballistics website

    Kestrel has an exchange program for going from the Horus to AB model. I think it's something like you send in your Horus version which Kestrel donates to AmericanSnipers.org, and $100 and they send you a new AB model. Don't quote me on that, I'm not sure it's correct. If you're interested in...
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