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Recent content by solst_ice

  1. S

    RSI products

    Has someone experience with the products offered by RSI, especially Shooting Lab Ballistics and Pressure Trace II?
  2. S

    Gyro stability 155gr Lapua Scenar vs. 168gr Hornady HPBT match

    I know, they're a bit slow. Using single based powder. The 175gr are running out of my 20" at around 2450fps.
  3. S

    Gyro stability 155gr Lapua Scenar vs. 168gr Hornady HPBT match

    I've checked the Berger twist rate stability calculator to find the gyro stability of a 155gr Lapua Scenar fired from a .308 20" 1/12" twist at 2600fps at 20F and 300feet. It gave me just marginal stability (the BC would be reduced about 8%) . In comparison, the 168gr Hornady HPBT match at...
  4. S

    Kestrel 5700 Elite Target Direction missing?

    Not yet. But still on it.
  5. S

    AB Analytics, BC, velocity and twist rate

    Understand. But what is the ESSO project?
  6. S

    angle of attack vs. yaw of repose

    Ah, that simple? Thanks a lot!
  7. S

    angle of attack vs. yaw of repose

    Can someone explain me the difference in those terms in simple words?
  8. S

    bullet pointing and BC consistency

    I wish, I'd have over a mile in front of my house to train every day.
  9. S

    bullet pointing and BC consistency

    Pretty interesting. The only problem I got, that I can shoot up to 300m only most of the time. :(
  10. S

    wind reading downrange

    Pretty interesting. Will work on that. I also thought, it's more easy to sport mirage at higher magnification. Will try it at 20x and also take the binos.
  11. S

    wind reading downrange

    I've some difficulty to read the wind downrange. At the shooter's position it's fine using the feel method and a Kestrel. However, if your FFP is located in a calm area, it should be even more important to be able to read the wind downrange. At my range, the vegetation gives some signs, but...
  12. S

    seating depth, vibratory pattern and muzzle velocity

    When I develop a load for my .308, I keep the seating depth (0.010") at the same value for all the rounds and just change the amount of powder. The loads with most consistent SD in velocity usually also get very tight groups. For me, there was no reason to change the seating depth so far. But...
  13. S

    bullet pointing and BC consistency

    Interesting, but how to do that? Do you measure the drop at a range? But other factors, like environment, muzzle velocity variation would have in influence on that. I've no idea, how to measure the real value of the new BC.
  14. S

    bullet pointing and BC consistency

    According to Bryan Litz, pointing of bullets (those without a tip) can increase their BC. But how can I know the new BC they got? Wouldn't that mean, that I cannot rely on the BC data provided by a ballistic solver anymore, but would have to provide own data for the BC? Otherwise, all the...
  15. S

    AB Analytics, BC, velocity and twist rate

    I've played around with AB Analytics (desktop build 0060) a bit. I'm interested, how the retained velocity will change when another rifle twist is used. E.g. 12" vs. 11" vs. 10". Interestingly, the velocity column doesn't change at all (but the windage and drop columns do) . Is that the...
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