Recent content by otnot

  1. O

    6.5 creedmoor AR Only

    I've been using Staball 6.5 for awhile now. Through a 22 inch barrel I'm getting 2850 fps with 43.7 grains and a 123 gr. ElDM.
  2. O

    Media for dry neck case lube.

    Just use tiny lead bird shot as the medium.
  3. O

    300 Norma Mag

    I've been messing around with the Berger 215 Hybrid Target and H1000 but in the improved version of the 300 NM. A ten shot group averaged 3135 fps ES 9.5 and SD 4.1. This was down a 30 inch barrel and a charge of 87.5.
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    300 Norma Mag

    H1000 works great with the 215 gr. bullets but it's a bit to fast for the heavies. I can't find N570 so I've been using H50bmg and Staball HD(same burn rate as Retumbo).
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    300 Norma Mag

    But what is your air density? I'm at sea level and during the summer months my 1/9 twist is fine with an air density of +150 ft but when the temperature drops below 20 F I start to see air density readings of -2000 ft and when it gets down to below 0 or below I see air density readings of -6000...
  6. O

    300 Norma Mag

    My last barrel was a 1/9 twist and where I live it wasn't enough to stabilize even a 230 gr during the winter months. Don't overlook H50bmg it gives the best case fill and was the easiest to tune. Also Staball HD showed promise but I only had a pound to play with. It has the same burn rate as...
  7. O

    300 Norma Mag

    What twist is your barrel? What is the intended purpose, hunting or ELR? I would go with N570 if you can find it.
  8. O

    300 Norma Mag

    I just tested some h1000 and got 3115 fps with a SD of 3.7 and a ES 9.5.
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    Advanced Marksmanship My "Weaponized Math" now called "GRAVITY BALLISTICS". NEW Worksheet Attached.

    I've used Weaponized math for two years now and it's always been spot on. There's days when the environmentals have changed so much I can't get on steel and I have to go back to 300 and start again. I'm at sea level in Alaska and on a good summer day I might get a +150 ft AD but by winter and at...
  10. O

    300 Norma Mag

    I did and it's pretty slow. I had good results with H50bmg
  11. O

    300 Norma Mag

    To fire form I just dumped in 25 grains of Greendot in the case and sealed it by sticking the neck into a bar of soap. Worked like a charm and smelled oh so fresh. LOL
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    Load development in a gas gun

    My JP had trouble with Lapua brass due to its neck thicknes was causing over pressure. After you fire a few rounds see if you can slide a bullet back into the cartridge. I turned the necks and the problem went away. As to load development, I do a work up for the charge weight to find the...
  13. O

    300 Norma Mag

    There is a thread on accurateshooter.com by Alex Wheeler
  14. O

    JP LRP-07 Accuracy Issue

    It took me several thousand rounds to learn how to shoot my JP with any consistency. There is a lot of good information in this thread to get you there. Have you tried any 123 gr. bullets? That is what Jp recommends...
  15. O

    300 Norma Mag

    Hey thanks for the information
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