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  • M-Tecs's Avatar
    Today, 12:07 PM
    Veal makes great moulds but he is not very good with computers.
    3 replies | 90 view(s)
  • M-Tecs's Avatar
    Today, 11:43 AM
    18 replies | 376 view(s)
  • M-Tecs's Avatar
    Today, 11:20 AM
    I have way more casting and reloading stuff than I need but I can afford it and I want it so it is worth it to me. End of story.
    10 replies | 102 view(s)
  • fivegunner's Avatar
    Today, 10:24 AM
    I would like to buy a 6 cavity Brass Solid .360 GC . fivegunner-AT-sbcglobal-dot net.
    33 replies | 1356 view(s)
  • M-Tecs's Avatar
    Today, 01:16 AM
    Per the ATF rifles and shotguns yes but no on handguns. https://www.atf.gov/questions-and-answers/qa/may-unlicensed-person-acquire-firearm-under-gca-any-state
    18 replies | 376 view(s)
  • Larry Gibson's Avatar
    Yesterday, 04:56 PM
    That's why flatness of a fired primer is a poor indication of pressure. I tested some Winchester white box M193 a few years back for a friend. He said he was getting 3340 fps from his 20" AR. That is a bit fast. I stopped after 7 rounds as...
    68 replies | 1716 view(s)
  • Larry Gibson's Avatar
    Yesterday, 03:35 PM
    vzerone Please don't misunderstand, I was not being critical at all. I was just explaining the why the psi (CUP) figures you posted were different than the psi I posted. It's like driving your car about 60 MPH, your also going about 100...
    68 replies | 1716 view(s)
  • Larry Gibson's Avatar
    Yesterday, 01:17 PM
    And that's why we saw so many M1917s being used in NMC competition......the M1917s are more accurate and easier to operate, especially in the rapid fire stages than M1903s..........and if you buy that I've got a bridge for sale here in Lake...
    40 replies | 893 view(s)
  • Larry Gibson's Avatar
    Yesterday, 01:08 PM
    Previous TMs had definitions and testing procedures. Also the pressures listed are MAPs (Maximum Allowable Pressure). That is not necessarily what any lot of cartrdges is actually loaded to. Cartridges are loaded to a +/- velocity spec not to...
    68 replies | 1716 view(s)
  • Larry Gibson's Avatar
    Yesterday, 12:59 PM
    Yes the pressures are listed as "psi" but they are measured via CUP method. All older published pressures taken via CUP and LUP were refered to as "psi". However, with the advent of modern and better pressure measuring methods (transducer and...
    68 replies | 1716 view(s)
  • Larry Gibson's Avatar
    Yesterday, 11:52 AM
    With a bullet stuck in the throat, leade, etc. an AR bolt/carrier when drawn to the rear and released has sufficient momentum to push the next feeding bullet back into the case. I saw this many times over the years even with M193 and M855 ammo. It...
    68 replies | 1716 view(s)
  • M-Tecs's Avatar
    Yesterday, 11:13 AM
    Popper Did the primer show a firing pin indent? My AR 10's have firing pin springs. Does the DPMS? AR 10's are not standardized like AR 15's
    68 replies | 1716 view(s)
  • M-Tecs's Avatar
    09-18-2017, 09:34 PM
    What caused the gun to fire?
    68 replies | 1716 view(s)
  • M-Tecs's Avatar
    09-18-2017, 08:18 PM
    Easy enough to test with a primed case. Chamber the primed case and pull the charging handle back until the bolt rotates slightly and pull the trigger.
    68 replies | 1716 view(s)
  • Larry Gibson's Avatar
    09-18-2017, 07:34 PM
    Put them in a Tupperware container with lid. Form a small bowl out of tin foil. Put a small chunk of soaking wet sponge (water) in the tin foil. Put sliced apples, slices of oranges or whatever if you want a slight flavor to the cigars. You need...
    12 replies | 303 view(s)
  • Larry Gibson's Avatar
    09-18-2017, 03:11 PM
    I velocity/pressure tested some Venezuelan CAVIM 84 7x57 about 7 - 8 years ago. I would assume it was intended to be used in their FN-49s(?). It was loaded with a 139 gr FMJBT over 45 gr of an extruded powder. Cases were CAVIM 84 lot #101-01. ...
    14 replies | 513 view(s)
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About Larry Gibson

Basic Information

Date of Birth
April 15, 1947 (70)
About Larry Gibson
My first reloads were with cast bullets in the 30-30 when I was 14.
Lake Havasu City, Arizona
Shooting, what else?
Retired U.S. Army. Currently contract Research and development of ammuntion and relaods


Larry Gibson

“Deficient observation is merely a form of ignorance and responsible for the many morbid notions and foolish ideas prevailing.”
― Nikola Tesla


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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check