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  1. damoncali

    Kestrel Rant

    I still don't get why people buy them. There are many much cheaper options that do the job just as well, although I've yet to find one that has a rotating impeller so you can read a cross wind, which would be nice.
  2. damoncali

    Rifle Scopes How much of a pain are CW turrets?

    I always look at the scope and read the dial. It's too easy for me to screw it up otherwise.
  3. damoncali

    Need quick answers to Semi-noob questions

    The simple answer is: 1) Use G7. 2) Tweak the thing with the most uncertainty. Don't mess with BC until you've measured everything else.
  4. damoncali

    Primer Blast Waves

    Seems silly to go to all that effort and use a rifle barrel rattler than a repeatable experimental setup with a vented bomb. Kuo published a paper in the early 80s that describes the method. It’s very similar to that described here, but better. If memory serves he characterized the CCI military...
  5. damoncali

    Accuracy International AXMC for first rifle - Am I crazy?

    They're not very well set up for F class. If that's your focus, you'd be better off going with a single shot, 30" barrel, match trigger, appropriate stock, etc. I've seen people shoot them at F class matches, but they usually come back later with a different rile, or not at all. Edit: Same goes...
  6. damoncali

    G1/G7 Discrepancy

    Look at the actual experimental data in that paper. It's pretty noisy. Other sources show similarly scattered results. Again, I'm no expert, but I'm told by folks who've worked extensively with this stuff that PRODAS numbers should only be used with caution, because some of them are pretty...
  7. damoncali

    G1/G7 Discrepancy

    I'm not a 6DOF expert, but Magnus moment and pitch damping coefficients tend to have a lot of uncertainty.
  8. damoncali

    G1/G7 Discrepancy

    New calculations or new data?
  9. damoncali

    G1/G7 Discrepancy

    To be clear, I don't think using custom drag curves is hype. It's the next logical step up from standard drag functions, and what should be used if available, no matter the calculator. The bottom line is that calculators are as good as they need to be. They are not the weak link in the chain by...
  10. damoncali

    G1/G7 Discrepancy

    Most ballistics calculators use what is known as a Point Mass model. One of the inputs for a PM solver is the drag coefficient, which is not easy to calculate accurately, and is heavily dependent on the Mach number. Since the CD vs Mach curves for most bullets look more or less the same, solvers...
  11. damoncali

    G1/G7 Discrepancy

    With all due respect, this is almost entirely incorrect.
  12. damoncali

    G1/G7 Discrepancy

    They're not antiquated, they just use less data. The underlying calculator is exactly the same. Use the best data that you have available, whether it's G1, G7, or a bullet-specific drag function (in increasing order of goodness), and call it a day. G1 and G7 are approximations of the actual...
  13. damoncali

    G1/G7 Discrepancy

    Either way, you should not see a significant difference out to 1000 yards unless you are shooting a very unusual system. 99% of the time, pick G7. But if you're seeing major differences, that means something is wrong with your input. A G1 will predict a lower transonic drag than G7 if the two...
  14. damoncali

    Nightforce Ballistic Software?

    If it was accurate then, it's accurate now. It's probably just a point mass calculator.
  15. damoncali

    G1/G7 Discrepancy

    If you haven't shot it, how do you know it's better? Generally speaking, the two will give acceptable (and very similar) results from about mach 2 to mach 3, which covers a whole lot of shooting scenarios. It's really only at very high velocities and in the transonic region that you see...
  16. damoncali

    Movie Theater Anyone Read A Good NON-Fiction Book Lately?

    "Force Recon Command" - smarter than your typical "war stories" book. "That Non-Violent Stuff Will Get You Killed" - breaks through the surface level, pop-culture history of the civil rights movement. It chronicles the armed resistance of black Americans through history, and how that side of...
  17. damoncali

    Lapua ballistics app

    I like it. Some of the 6DOF effects are suspect, though. I think I had it saying a .338 Lapua lost dynamic stability at 1100 yards or something like that. But it's pretty good overall if you use Lapua bullets.
  18. damoncali

    Gunsmithing Taking a CNC course

    Buy a copy of the machinery's handbook. You can get lost for hours in there reading about things you never knew existed. You can get a copy of Autodesk Fusion 360 for free (for educational/noncommercial use) and get a feel for 3D CAD. And while not directly applicable, you might benefit from...
  19. damoncali

    What do we think of this BP chassis?

    I meant the grip and the hex pattern among other features that are made to look "cool" rather than function well, not the bullpup config. I still think it's a terrible idea, but to each his own. I would expect quality to be poor, but you won't know unless you try.
  20. damoncali

    What do we think of this BP chassis?

    It doesn't look like they've been released, but if you really want one, I'd buy it quick, beause that dog won't last long. But first, I would back up and ask why you want a bull pup bolt gun. There are plenty of downsides (length of pull, the inability to sling it up properly, and the carpel...
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