He literally just mentioned the primary downside of SFP reticles used as rulers.
True, but not if you’re trying to move poi a specified called amount. And assuming the mag isn’t cranked back down to reacquire the target as is often the case with SFP and then ripped back up to a different X to shoot.
Guys zooming in and out like Jack Sparrow trying to look through his spyglass is just painful to watch in matches and comps, and even more painful to watch when hunting.
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.
Sticky this comment and close it up folks.
Horizontal Component of Distance or HCD yardage run through a non-angle compensated solution will work for lower angles of fire, say 15deg or less. Above that threshold, the small angle approximation is no longer valid, and the trajectory solutions done this way will start to develop error. How big that error is will depend on angle and range, and you may not notice it in practice for most reasonable shots. The proper solution for shots at extreme angles and ranges (assuming the solver is set up to handle it correctly and isn't just doing it's own internal HCD calculation) would involve Line of Sight (LOS) distance and angle.
Correct. You should do some math on what angle and range it takes to cause discrepancy versus standard angle compensated distance measurement (we do this with surveying total stations every week). It's usually so far outside of shooter and gun ability that it's meaningless.
Yeah I've looked at it in the past but that's about what I'd expect. In any discussions I've seen on the topic it's really only relevant to ELR/artillery type trajectories.
Here's my simple description of how to use Quickdrop:
I think you’ve said that you don’t currently dial now, but that you zero at 200/300 yards and use holdovers.
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 surface and one fired over an equivalent horizontal distance but at a large angle with respect to the Earth's surface (and therefore, a longer LOS distance).
GoodGun, average gun and Bad gun are better describers with less subjective overlap for good, avg, bad brackets.
Not only is it that easy, you're dead on at all those ranges AND all the intermediate ranges down to 10yd resolution! And you're within an acceptable margin of error from 0 to 700+ (within your ability to shoot). And once you figure out your dope and dial in your correction, if the animal moves towards/away from you, you can hold over/under by 0.1mil per 10 yds of movement. I've personally used this trick before, dialed on an animal, got all set, then they started slowly walking, and I slowly corrected as I estimated every 10yds they moved closer to me without having to come out of the scope or fiddle with RF/dials.
it IS that easy! Validate zero and drop and go shoot!
