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  1. J

    Matchking X

    Elevation isn't where you see the biggest gain with a high-BC bullet. Wind drift (and specifically, resistance to changes in wind speed and direction) is far more important.
  2. J

    Moose/Elk/Black Bear/Wolf Hunt 6.5CM Bullet Selection

    The 147 ELD-M penetrates deeper than the Bergers I’ve used, and seems to stay together more reliably than the 143 ELD-X, too, based on reports I’ve seen. My hunting partners and I have killed elk, MD, WT, moose, black bear, pronghorn, etc., with various ELD-M bullets. They routinely penetrate...
  3. J

    Would you put shot distance limits on big game?

    So, you’re saying that this excessive law would not be invoked unless some other law that already exists was already broken. Got it. Just another excuse for redundant excess overreach.
  4. J

    School me on mils

    Yup, humidity does affect aerodynamic flight, but the effect is minimal. Water vapor molecules are less dense than air, thus high humidity reduces the overall atmospheric air density.
  5. J

    Is there anyone who prefers MOA vs MIls for hunting purposes?

    Then help your hunting partners stop using the least precise system possible, and move towards a system with a common reference frame (corrections in proportions of the target, based on common reticle subtensions, etc.) ;)
  6. J

    Is there anyone who prefers MOA vs MIls for hunting purposes?

    US Army makes that approximation, but the USMC and all scope manufacturers that I’m aware of use true mrads.
  7. J

    Is there anyone who prefers MOA vs MIls for hunting purposes?

    I don’t think I would call it very precise, but it can be done, yes.
  8. J

    Is there anyone who prefers MOA vs MIls for hunting purposes?

    Well, the radian is the angular unit adopted as part of the SI system, so it is metric. There’s no fudge factor for pi. One radian is exactly the arc length along a circle, equal to 1000 yards at a radius of 1000 yards. And one milliradian is exactly an arc length of 1 yard at 1000 yards. The...
  9. J

    Is there anyone who prefers MOA vs MIls for hunting purposes?

    I’ve seen a lot of “average” hunters shoot under stress. Even top shooters like those that compete in the shooting sports, such as PRS and NRL-H, have mental slip-ups. The more mental gymnastics involved with making a shot, the more likelihood of a mental malfunction under stress.
  10. J

    Best Ballistics App Today?

    It’s very intuitive and highly functional. The downside is that it’s not updated as often nor supported quite as well as some of the other options.
  11. J

    Best Ballistics App Today?

    My current favourites are Ballistic: AE (only for iOS), AB Quantum, and GeoBallistics.
  12. J

    When to hold vs when to dial?

    Agreed. I'm not into Horus reticles for hunting (or really anything else I use a rifle for).
  13. J

    Is there anyone who prefers MOA vs MIls for hunting purposes?

    It's not primarily due to the small angle approximation, but to the fact that simple trig only accounts for the effective gravitational distance of the bullet's travel and not the additional drag causing divergence between the trajectory profile of a bullet fired parallel with the Earth's...
  14. J

    Is there anyone who prefers MOA vs MIls for hunting purposes?

    Ah, I see what you're saying now. That's true, but without subtension calibration it doesn't work if the shooter is trying to speak the same language as a spotter.
  15. J

    Is there anyone who prefers MOA vs MIls for hunting purposes?

    He literally just mentioned the primary downside of SFP reticles used as rulers. ;)
  16. J

    Is there anyone who prefers MOA vs MIls for hunting purposes?

    Yes, in the extreme cases LOS distance will start to matter because drag will start to play a larger role. I'm also talking about simple trigonometry, not Leica's "equivalent horizontal range," which actually factors atmospheric variables into the equation, as well. In the simple case...
  17. J

    Is there anyone who prefers MOA vs MIls for hunting purposes?

    Yup, if the corrected horizontal distance is 428, it doesn't matter what the angle nor the LOS distance to the target is (the LOS distance will vary with the angle, assuming corrected distance is always 428).
  18. J

    When to hold vs when to dial?

    It all depends on the precision of the reticle. If the reticle has lots of hashmarks with fine subtensions, sure. But for most reticles, holding for anything over about 400-500 is less precise than dialing (assuming the scope works correctly).
  19. J

    Sold Carbon Six 50% off certificate

    Anybody need a Carbon Six prefit? Save yourself a quick $60+.
  20. J

    School me on mils

    I'm in Calgary. You should try to get out to a CDTSA or SAPRL PRS match, where you could ask questions and see how this stuff works in practice. That would fast-track your learning curve.

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