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  1. J

    Gunsmithing .473 Rim Diameter Case - Subsonic Suggestions

    Re: .473 Rim Diameter Case - Subsonic Suggestions <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: G.Ruff</div><div class="ubbcode-body">30 BR would work with a huge bullet like the 220/240 SMK. You can make brass by expanding the neck of 7mm BR brass, 12 grains or...
  2. J

    Bauer Arms?

    Re: Bauer Arms? So did you get in touch with him over the phone? If so, what's his phone number. He hasn't answered my last couple of emails and I can't find a phone number. Thanks! Brad
  3. J

    Gunsmithing Question about AICS 1.5 short action stock

    Re: Question about AICS 1.5 short action stock Thanks!
  4. J

    Gunsmithing Question about AICS 1.5 short action stock

    I'm thinking about getting an AICS 1.5 stock but have a couple of questions for anyone that knows... 1) How wide is the barrel channel? 2) Does the opening for the recoil lug fit larger lugs like the Badger Ordnance lug? Thanks! Brad
  5. J

    Range Report CD Tables for Standard Projectiles

    Re: CD Tables for Standard Projectiles I got these from Bob McCoy -- I'm sure everything the Army does now is ICAO based.
  6. J

    Range Report CD Tables for Standard Projectiles

    Re: CD Tables for Standard Projectiles Do you mean like these? CD - Mach for standard bullets Brad
  7. J

    Range Report Can someone explain?

    Re: Can someone explain? At what conditions did you establish zero? Have you read this: Elevation? Brad
  8. J

    Range Report My new Ballistics Calculator -try to break it!

    Re: My new Ballistics Calculator -try to break it! <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: damoncali</div><div class="ubbcode-body">Brad - one question on the small velocity. I'm scratching my head on this - is this not just what happens when bullets are...
  9. J

    Range Report My new Ballistics Calculator -try to break it!

    Re: My new Ballistics Calculator -try to break it! <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Bryan Litz</div><div class="ubbcode-body">This is not a problem, as the velocity should increase. </div></div> I stand corrected. I didn't think it would...
  10. J

    Range Report My new Ballistics Calculator -try to break it!

    Re: My new Ballistics Calculator -try to break it! <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Bryan Litz</div><div class="ubbcode-body"> Out of curiosity, what frequency are you integrating? My PM solver uses a 0.001 second time step. I'm not sure what JBM...
  11. J

    Range Report JBM Range Card

    Re: JBM Range Card <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lindy</div><div class="ubbcode-body">The temperature parameters in that card exist for only one purpose: to compensate for the change in muzzle velocity with temperature. </div></div> Two purposes...
  12. J

    Range Report JBM Range Card

    Re: JBM Range Card <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Bigwheels</div><div class="ubbcode-body">I was printing off a range card the other day, & noticed that the card gave a higher correction for a higher temp. ie. given the same 1000' elevation with...
  13. J

    Range Report Books on external ballistics?

    Re: Books on external ballistics? <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Shiraz</div><div class="ubbcode-body">I'm looking for books on external ballistics. I thought the guy who runs JBM wrote a book on ballistics, but I can't seem to find it. I've...
  14. J

    Gunsmithing 458 Socom Pistol

    Re: 458 Socom Pistol What action did you use and was it always a pistol action? I'm asking because I was under the impression that making a pistol out of a rifle action (one that was previously a rifle) is illegal -- at least requires a SBR stamp. Am I wrong? Note that I'm not suggesting...
  15. J

    Range Report The effects of side to side cant - field test/pics

    Re: The effects of side to side cant - field test/pics This is a bug -- definitely. The telltale sign to me is not the drop, but the difference in velocity. I'll have it fixed tomorrow. As always, thanks for letting me know about it, I always appreciate any input that helps make my site...
  16. J

    Range Report A-Max b.c.

    Re: A-Max b.c. <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jrob300</div><div class="ubbcode-body">Pretty sure it's G1. I just scroll down the menu, pick 208 Amax (Litz), put in the rest of my parameters... I DO know that it's a lot flatter if I just pick the...
  17. J

    Range Report calculating bullet path

    Re: calculating bullet path <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Chiller</div><div class="ubbcode-body">please explain..... A trajectory is the path a moving object follows through space as a function of time With JBM you have all the info...
  18. J

    Range Report Using different loads with the same weapon/zero

    Re: Using different loads with the same weapon/zero <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LawnMM</div><div class="ubbcode-body"> Thats awesome. Just tried it with the main trajectory tables and it works great. Any chance of adding it to the range card...
  19. J

    Range Report Using different loads with the same weapon/zero

    Re: Using different loads with the same weapon/zero <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LawnMM</div><div class="ubbcode-body"> Brad...any chance of adding Mils/MOA as units of measurement for the offset fields? That way we have a tangible unit of...
  20. J

    Range Report Minimum range without damage

    Re: Minimum range without damage <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kentactic</div><div class="ubbcode-body">whats the approximate minimum range i can shoot 1/4 in steel plate with a 168gr SMK .308 bullet with 2550 muzzle velocity if thats of any...
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