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  1. C

    How do I adjust my eye relief on these rings?

    There's no way to move the rings rearward on the base? Seems like there should be.
  2. C

    How do I adjust my eye relief on these rings?

    The only way I shoot consistent size groups is with a good position and comfortable repeatable cheek weld. The only problem is that if I keep back far enough on the rifle to do this without shouldering, my eye relief on the scope leaves me with a dark crescent moon on the bottom left of the...
  3. C

    .30-06 Sprg OCW: 175 gr SMK + H4350

    While my group sizes weren't great today, it does demonstrate that all the charges between 58.0 gr and 58.3 gr have the same average triangulated vertical POI.
  4. C

    .30-06 Sprg OCW: 175 gr SMK + H4350

    Here is a refinement with 57.8 to 58.2.
  5. C

    Anybody care to explain this charge weight/POI ridiculousness?

    Exactly.
  6. C

    Anybody care to explain this charge weight/POI ridiculousness?

    LRGoodger's answer is the same as oldfatguy, which makes complete physical sense and has zip to do with sight heights or crossovers (LRGoodger says as much in his post). Recoil is not perfect, makes a muzzle rise regardless of zero. The more the muzzle gets to rise before the bullet leaves, the...
  7. C

    Anybody care to explain this charge weight/POI ridiculousness?

    Ah, mea culpa, the classic semantic argument of "rise". A clarified version of my question: are you saying bullets rise without being arched? An arched bullet trajectory has a negative vertical acceleration the instant it leaves the barrel. So it is fired at an upward angle, so it rises...
  8. C

    Anybody care to explain this charge weight/POI ridiculousness?

    A thought experiment: For a rifle zeroed at 100 yards with a load of a given speed, if all things are equal (harmonics, etc.) except bullet speed, will a faster bullet hit the paper at 100 yards higher or lower than a slower bullet?
  9. C

    Anybody care to explain this charge weight/POI ridiculousness?

    I don't follow. Crossover? Are you trying to say bullets rise?
  10. C

    Anybody care to explain this charge weight/POI ridiculousness?

    Dammit man. That makes too much sense.
  11. C

    Anybody care to explain this charge weight/POI ridiculousness?

    100 yards. And these are close to beginning loads (55 gr). More details: .30-06 Sprg 175 gr Sierra Match King 22" barrel Brass length: 2.484" Powder: H4350 COAL: 3.423" Case weight: 185.7 gr H2O capacity: 70.7 gr Previous OCW with higher charge weights:
  12. C

    Anybody care to explain this charge weight/POI ridiculousness?

    Yeah the horizontal is all me. Neck tension is consistent though. I was getting really furious. If I hadn't started round robin shooting at the same diamond I would have left completely stumped instead of only marginally stumped.
  13. C

    Anybody care to explain this charge weight/POI ridiculousness?

    they were shot round robin increasing charge weight, not as groups. Despite the round robin, high charges shot low, low charges shot high, that's how they distributed. No mirage. 100 yards. No barrel contact. FWIW, this is a light rifle that I shoot sub-MOA from routinely, including down to 1/2 MOA.
  14. C

    Anybody care to explain this charge weight/POI ridiculousness?

    I started by wanting to do a small OCW 3% below my last result at 57.8 gr. I ended up very lost and shooting my charges at the same diamond to see if I could figure out what was happening... because I am not that terrible a shot. Low charges are higher than the high charges by 4 inches...
  15. C

    Factory R700 LA: Very long throat or my imagination?

    So for a .30-06 cartridge with a 175 SMK to touch the lands, the COAL must be 3.455", with a case trimmed to 2.484". So with a 1.242" bullet, that's a 0.271" seating depth. This is a highly reproducible number. Multiple dummy cartridges. So, even 0.03" off the lands is 3.425". Does that seem...
  16. C

    2 OCW. 2 Rifles. 1 Load?

    pmclaine, barrel whip via the shape of the group definitely seems to be 42.0 for both rifles. No sign of the "triangle".
  17. C

    Well so I guess they really are bad.

    29aholic, How often/much was the trigger pulled on that rifle between when you adjusted the tension screw and when it started to discharge on its own? Was the tension screw secured post adjustment? By the way, I think you did good posting here. It shares with the community the exact...
  18. C

    Well so I guess they really are bad.

    I wish you still had the trigger attached to that rifle. I'd be curious to see the result of some function tests with the barreled/bolted/triggered action out of the stock.
  19. C

    Well so I guess they really are bad.

    This adjustment is EXACTLY how to end up with a non-pull discharge with a Remington trigger. You no longer have enough tension on the reset to put the trigger on sear. You backed it out to the ragged edge and the spring wore enough (or the screw backed out more) to be too short for proper reset.
  20. C

    How reliable is the 3% charge weight observation for node spacing?

    In your experience? Can I immediately jump down 3% from a current but, very hot OCW (from 58.0 gr to 56.2 gr), then make a few cartridges +/- 0.4 gr to verify that the 56.2 is indeed an OCW? (H4350 in .30-06, 175 gr SMK).
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