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OPFOR_06_Actual last won the day on February 6 2016

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About OPFOR_06_Actual

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    Leavenworth, KS, USA
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    two daughters & 1 each grandson/daughter
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  1. Looks like something happened to my thread... I can't go to 'AMMO PORN' and continue posting historically accurate information.

    Sure would be nice to have access back.


    OPFOR - OUT!

    1. The_Dad


      I just sent in an error report... we'll see how long it takes to get a response

    2. OPFOR_06_Actual


      No response yet, apparently...

      Oh, well.

      It was fun while it lasted, and I can go back to my previous posts and copy-paste if I need to.


      OPFOR - OUT!

  2. I finally found it! The document is titled "Historical Development Summary of Automatic Cannon Caliber Ammunition: 20-30 Millimeter." Dated (also declassified) January 1984. Written by Dale M. Davis, Munitions Division, AIR FORCE SYSTEMS COMMAND*UNITED STATES AIR FORCE*EGLIN AIR FORCE BASE, FLORIDA. (The period covered by the report is 1952 to 1983.) I quote: "SECTION VII HIGH DENSITY PENETRATORS Perhaps the most spectacular aspect of the GAU-8 gun is the effect of its high length-to-diameter ratio (subcaliber) depleted uranium penetrator upon striking ar
  3. The next candidate for dissection shall be the German 3-cm MK 103 (one of my favorite light tank weapons!) This little beastie lists its AP ammo as the "3cm Armor-Piercing H-Pzgr. Patr. 103 (w)". Please note the 'H': this tells us that it has a 'Hart Kern' or 'Hard Core' and it's made of 'Wolfram-Karbid' (Deutsch for Tungsten Carbide). How do we know this? Well... see the '(w)' at the end of the WoT nomenclature? That stands for 'Wolfram/Tungsten'. This supposed AP round is (in reality) what we all know as APCR!!! [But wait! There's *MORE*!!!] The AP Composite Rigid has a s
  4. Here's the pertinent perforation data for the previous post (above): The maximum peak pressure remains exactly the same, due to the reduction of the projectile/sabot weight, and the increase of the propellant weight. OPFOR - OUT!
  5. Finally got the numbers worked out for the perforation stats on this beastie: This projectile is about 37% lighter than the previous APCBC-HE-T, so the MV was increased from 3,255.19-fps to 3,738.5-fps. This only takes into account the change in the projectile (+ sabot) weight. This reduced the maximum peak internal pressure by 22.3%, so the amount of propellant can be increased by ~8.35%, for a final MV of 4,050.71-fps. I'll post the perf data shortly - wifey needs my attention! OPFOR -OUT!
  6. Small bit of trivia: The M392 is of United Kingdom manufacture and bears the U.K. designation of L36A1. Reference: TM 43-0001-28, dated April, 1994 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. OPFOR
  7. Read an old REBEL_TEXAN thread about update 9.7 nerfs: "Penetration of the APDS-T M392 shell for the 10.5 cm L7A1 [M68/Bordkanone/etc.] gun reduced from 268mm to 257mm..." Well, using those penetration nomograms I referenced in previous entries, this is how the round *SHOULD* perform against BHN-220-to-330 armor plate (RHA): I worked this out a couple years back as practice. OPFOR - OUT!
  8. A N Y W A Y . . . Now that I've done the work for the 10,5 cm Kwk (46) L/70 regarding it's 10.5-cm Pzgr rot [AP projectile], how about the next one I do should be a real-world APDS, like maybe this: NATO (German) 105mm APDS 105-mm x 617 DM13, HVAPDS –T MV: 1,473-mps; 4,832.67-fps (recalculate this for the Lowe 105 gun) Projectile as fired (with sabot): 5.84-kg; 12.88-lbs Sub-projectile in flight: 4.02 kg; 8.87-lbs Tungsten core: 2.73 kg; 6.02-lbs Just sayin' OPFOR - OUT!
  9. I see what you did there... verrry intearestink... but SCHTOOPID! [Artie Johnson, the German in the bush character on 'Laugh-In'] Cool wartime poster, but I'm presuming (I don't want to 'assume') that you are aware that if the documents aren't properly declassified, I would be liable to be investigated by the DoD or Homeland Security for letting State Secret Information escape to the world wide web. I don't want to risk losing my secret clearance by posting actual classified stuff. Besides, the soldier on the poster is only a lowly Buck-Sergeant. We had vast herds of those running lo
  10. SIERRA-HOTEL! Good to establish comms with a fellow warfighter, even though I never did anything but cold war deployments and got all busted up & medically retired one week before Desert Shield became Desert Storm-1. Anyway, what did you think of the Kwk 36 pen charts I posted on page-6? That's all based on the nomograms developed here - "SOURCE: Based on experiments by American, British and Canadian military establishments." Nomogram page is dated 1 January 1945. The overall document is titled "Effects of Impact and Explosions", dated 12 February 1986. This is also the declassificati
  11. AbnBob, regarding your question about the Tiger-1's 8,8-cm L/56 possibly being equal to the Lowe's 10,5-cm L/70, here's the numbers I just worked up for that gun firing the 8,8-cm Pzgr 39 & the Pzgr 40. These are images of my original EXCEL spreadsheets for these projectiles. I choose to ignore the widely available penetration charts since most are based on old unverified data, or like I wrote above, the targets were much more difficult to defeat than those by the Allies (150-kg.mm = face-hardened plate: BHN 419-420 vs. BHN 220-330). Also be aware that these charts are for zero s
  12. You still living neat Ft Campbell? I got medically retired about a week before Desert Storm-1. (Feb 1991) I knew a bunch of folks that went & I was mad I couldn't go with them! 1st jump unit was Charlie Co., 1/509th ABCT in Vicenza, Italy (SETAF). Got to jump into West Germany a bunch of times. Actually got to go to Berlin on my first field exercise to learn Urban Combat with the Berlin Bde. Actually waved at an East German border guard over the Berlin Wall from the 5-story building we were repelling down. I had our little green binos & he was using some *HUG
  13. Just noticed your handle... you a 'Wind Dummy' too? OPFOR
  14. Possibly. Here's some of my earlier work with the 8.8-cm L/56: 8.8-cm (L/56) FlaK 18/36 (@zero slope) Perf (100%) = up to 197.1mm Perf (50%) = 208.8mm No Perf (0%) = 220.5mm I want to re-do some of my calculations due to some more good reference material I've acquired. Mostly, I've run across several different dimensions for the Pzgr 40 'Wolfram Karbide' core that I want to confirm. Also, when I get to the Russian & American/British (NATO) APCR data, you'll see that Wargaming is really exercising that famous 'Russian Bias'.
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