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Recent content by DocUSMCRetired

  1. DocUSMCRetired

    New Berger 375 bullet 410 hybrid

    Based on the performance inconsistency of the A-tips. The probability of hit on a standard shooter goes from 50% first round at 1 mile to 31% just with the BC Variation of the A-Tips alone. (Target is a 20" round gong at 1 Mile). That is given ANY of the above mentioned Sierra, Berger, or...
  2. DocUSMCRetired

    New Berger 375 bullet 410 hybrid

    In our testing, from 0 - 1800 yards. The A-Tips have about a 3% shot to shot variation on BC. The Sierra 350gr have a 0.5% shot to shot BC Variation. The Lead Core Berger's have a 0.5% shot to shot BC Variation. The Solid Berger's have about a 0.6% shot to shot BC Variation. The Cutting Edge...
  3. DocUSMCRetired

    Garmin Foretrex 901 and the system

    I just went and tested it to make certain. I have misspoke and corrected my other post. The 901 gets the Range, Inclination, and DOF from the Fury 5000 when paired.
  4. DocUSMCRetired

    Garmin Foretrex 901 and the system

    It will take Inclination, and DOF from the Fury 5000.
  5. DocUSMCRetired

    Garmin Foretrex 901 and the system

    You can run wind brackets on the 901.
  6. DocUSMCRetired

    New Berger 375 bullet 410 hybrid

    The bullet is in production. Should be on the shelf July ish. But they are being made right now. Possibly earlier though. The initial run will likely be sold out in hours.
  7. DocUSMCRetired

    Steel targets for 338 lapua

    I just replaced a 10" x 1/2" AR 550 steel plate which was showing pretty bad damage from 338+ at 200 - 500 yards. I replaced it with an SR500 10" x 3/4" plate and it showing great promise. I would suggest you run either AR550 or even better an SR500 at least 3/4" thick. 1/2" didn't last 1 year...
  8. DocUSMCRetired

    Tall target test results???

    Live fire is the best way. This will really tell you what is going on. Also you need to do both vertical and horizontal testing.
  9. DocUSMCRetired

    Tall target test results???

    Their are a couple of reasons this can happen: 1) The reticle is not level to the scope. 2) The Scope is not level but the reticle is true in the scope. 3) The erector is not traveling vertical. 4) Level is off by a degree or so (I have seen this before, super rare). 5) Level is not perfectly...
  10. DocUSMCRetired

    G1 & G7 Tables?

    I did that research years and years ago when I needed to produce a historical portion for a bunch of training stuff. If I remember I can go back and find those references. Get the vacuum out and dust off some books etc lol.
  11. DocUSMCRetired

    G1 & G7 Tables?

    This is sort of correct. It wasn't only to verify the current tables in use. But also to provide an update to when tables are used. Like when a user wants to use a G7 or G1 etc. Instead of using the old data sets from 75 years ago, it makes it possible to implement new data sets devised from new...
  12. DocUSMCRetired

    G1 & G7 Tables?

    The formula for Sectional Density is Weight(in grains)/7000/Caliber Squared. I took some liberties here and simplified the formula. We convert from grains to pounds (7000 grains per pound) normally, but in this case it isn't necessary. The math was simply to show you how it works. The...
  13. DocUSMCRetired

    G1 & G7 Tables?

    The G1 Standard Projectile is 1 Caliber and 1 lb. Here is the math. Section Density = weight / caliber^2. Form Factor for the Standard is 1.0. BC = Sectional Density / Form Factor. So to get all 1's across the board you have. 1/1^2 = 1 SD Form Factor = 1 1/1 = 1.0 or the Standard.
  14. DocUSMCRetired

    AB app and kestrel

    We have something planned for a release this summer. 4 - 6 months maybe. An entirely new project with all new features. As long as field testing continues to go well, the civilian version will be out soon after.