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  1. Rifleman

    .22 bullet flight

    FYI, I'm currently shooting Eley EPS. You can see the nipple- shaped nose on the graphic at this page: http://www.eley.co.uk/olympic_rifle.htm
  2. Rifleman

    .22 bullet flight

    And if I didn't get it wrong, why would water molecules (in the slip stream?) cause a stability problem? Larry
  3. Rifleman

    .22 bullet flight

    Greg- A couple hundred thousand rounds through a .22 rimfire barrel is no big deal. They last for years and years if you take care of them. Actually, I like the vapor trail theory better, but what do I know. Wil- that woud be a good test but it would be nearly impossible for me to set up in a...
  4. Rifleman

    .22 bullet flight

    Greg- DA is density altitude. Larry
  5. Rifleman

    .22 bullet flight

    What did you mean by "compressible speed"? Larry
  6. Rifleman

    .22 bullet flight

    Blueskiesup- First, remember that you have to simplify greatly, because I am NOT an engineer. That said... Here's what's been observed: At 1000-1050 ft. elev., with DA at about 700 I get good performance with muzzle velocity of 1078 fps. Groups open up as temp goes up. Above DA of 900-1000...
  7. Rifleman

    .22 bullet flight

    OK, I see the problem, I mis-spoke. Ignore my first post-- my second post asked the question correctly. I didn't say accurately in the first post what I've observed. I meant to say that we've seen "faster" ammo shoot best at high AND low D.A., so long as the air is DRY. But once humidity goes...
  8. Rifleman

    .22 bullet flight

    Greg- Yes, but... what we're trying to figure out is: why does group size open up when the air becomes thinner due to humidity, but NOT when due to being at higher altitude, or the barometer dropping? I would think that thin air is thin air, regardless of cause-- temp rising, barometric...
  9. Rifleman

    .22 bullet flight

    Gentlemen (and ladies): I come to you from the world of International rifle shooting. I have become involved in learning why a .22 bullet, traveling at less than 1100 fps, does what it does in differing air densities. Specifically, we are attempting to decipher why flight stability (and hence...

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