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  • Larry Gibson's Avatar
    09-21-2017, 07:09 PM
    No, 26-27 gr H4895 will be right at 100% load density. Velocity will be 1800-1900 fps.
    6 replies | 202 view(s)
  • Larry Gibson's Avatar
    09-21-2017, 11:07 AM
    Lee's C312-155 sized at .312 shoot very well with no leading in my Russian SKS. It had a groove diameter of .311. I have shot other cast bullets sized .311 w/o any problems. I use GC'd (Hornady's) bullets and a good NRA 50/50 lube such as Lars...
    6 replies | 202 view(s)
  • Larry Gibson's Avatar
    09-21-2017, 10:54 AM
    Magnum rifle primers were also developed for (other than the large capacity magnums) the use of medium and slower burning ball powders in standard cases, especially for use in colder climates. The CCI 250s work very well in cases from 30-30 up...
    19 replies | 396 view(s)
  • Larry Gibson's Avatar
    09-20-2017, 09:25 PM
    I talked with Al this morning. We reminisced about SSG Pierce and the events 52 years ago today. I also told him I was still holding a grudge he ripped open my pant leg as the rip was from the crotch to below the knee.......thank goodness for...
    21 replies | 591 view(s)
  • Larry Gibson's Avatar
    09-20-2017, 05:25 PM
    On 20 September, 1965 SSG Larry Pierce sacrificed his life to save myself and other of his fellow soldiers near Ben Cat, Republic of South Viet Nam. He was awarded the MOH posthumously. Also wounded in action that day was Alfred Rascon who would...
    21 replies | 591 view(s)
  • Larry Gibson's Avatar
    09-20-2017, 05:20 PM
    Concur with cpaspr ^^^^^^
    75 replies | 2334 view(s)
  • Larry Gibson's Avatar
    09-19-2017, 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...
    75 replies | 2334 view(s)
  • Larry Gibson's Avatar
    09-19-2017, 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...
    75 replies | 2334 view(s)
  • Larry Gibson's Avatar
    09-19-2017, 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...
    44 replies | 1141 view(s)
  • Larry Gibson's Avatar
    09-19-2017, 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...
    75 replies | 2334 view(s)
  • Larry Gibson's Avatar
    09-19-2017, 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...
    75 replies | 2334 view(s)
  • Larry Gibson's Avatar
    09-19-2017, 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...
    75 replies | 2334 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...
    14 replies | 393 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 | 532 view(s)
  • Larry Gibson's Avatar
    09-18-2017, 01:03 PM
    Did not fire out of battery or bolt and bolt carrier would have been blown to the rear. OP had a bore obstruction. Watch the sequence of events in the video. OP pulled the trigger, just a click, no bang, no recoil. OP Ejected the case and next...
    75 replies | 2334 view(s)
  • andym79's Avatar
    09-18-2017, 06:47 AM
    Apparently ruger did do the ruger 1 in 475 linebaugh for a bit. https://m.youtube.com/watch?v=zQzPwg6jJ4A
    18 replies | 384 view(s)
  • Larry Gibson's Avatar
    09-17-2017, 07:28 PM
    I modified a Leupold base to fit the rear sight of one of my "sportered" M91s. I put a Redfield 3X pistol scope on it. It's also D&T'd for a Lyman SME receiver sight and I modified the front base to take an M14 front sight. The Bolt handle is...
    11 replies | 503 view(s)
  • Larry Gibson's Avatar
    09-17-2017, 04:44 PM
    "This has been an interesting read. I am flummoxed as to what this cartridge will do that a 35 Whelen IMP will not?" The 35 XCB (35x57) was designed to feed out of standard Mauser actions w/o any action modifications. The 35 Whelen IMP most...
    82 replies | 10228 view(s)
  • Larry Gibson's Avatar
    09-17-2017, 04:27 PM
    Only 16 and 20" barrels with no mention of twist in 308W. Might do well with some tweaking in CBA commercial rifle matches.
    15 replies | 333 view(s)
  • Larry Gibson's Avatar
    09-17-2017, 04:16 PM
    "Acerbic response".......? You asked the question about Harrison 's theories being disproven. I answered honestly that if proven and reproducible it is no longer theory but fact. I also congradulated you on your own claimed ability and...
    32 replies | 801 view(s)
  • Larry Gibson's Avatar
    09-17-2017, 10:33 AM
    If a "theory's " results are producible then it is no longer a "theory". Years ago when I recovered a lot of my own cast bullets out of a .308W rifle that had been impacted in snow I noticed that many the 311284s which were seated below the case...
    32 replies | 801 view(s)
  • Larry Gibson's Avatar
    09-17-2017, 10:18 AM
    " I ask only because I've always assumed that the primer explosion is not of sufficient strength to cause a primer to move relative to the case." That assumption is incorrect. How much force does it take to seat a primer.....really not much...
    24 replies | 503 view(s)
  • Larry Gibson's Avatar
    09-17-2017, 02:28 AM
    You've all the right parts there. Problem is your not understanding what bullet stabilization is. Bullet stability is simply that the bullet has enough rotational spin to fly point forward. Bullets can be very stable yet inaccurate. It is the...
    82 replies | 10228 view(s)
  • Larry Gibson's Avatar
    09-17-2017, 02:20 AM
    The force of the LR primer explosion in the primer pocket pushes the case forward in the chamber. That resizes the case just like when you push the case into a sizing die. Eccept the case is already sized so the chamber shoulder sets the case...
    24 replies | 503 view(s)
  • Larry Gibson's Avatar
    09-16-2017, 11:41 PM
    Unbalanced bullets do in fact, stabilize. Please, let us not confuse bullet stability with the decreases in accuracy unbalanced bullets can have. Unbalances in bullets is the primary reason why we shoot groups instead of all the bullets going...
    82 replies | 10228 view(s)
  • Larry Gibson's Avatar
    09-16-2017, 10:43 PM
    I believe Brophy answers the question in his book.
    44 replies | 1141 view(s)
  • Larry Gibson's Avatar
    09-16-2017, 10:40 PM
    BTW; For practice I use the same bullet cast of COWWs + 2% tin WQ'd with the same load. These are not HP'd. They can also be shot all day maintaining accuracy where as the softer alloyed bullets need the barrel cleaned every 8 to 10 shots to...
    11 replies | 383 view(s)
  • Larry Gibson's Avatar
    09-16-2017, 10:38 PM
    I use COWWs +2% tin then mixed 50/50 with lead for my RCBS 35-200-FN cast bullets. These are pushed to 2150 fps out of my M91 Argie 35 Rem. I also HP the bullets 3/16" deep with the 1/8" Forster HP tool. It works for me.
    11 replies | 383 view(s)
  • Larry Gibson's Avatar
    09-16-2017, 10:30 PM
    Try backing the FL sizer out a tudge so the expander just expands the inside .001+. If the rounds with a "bulge" at the base of the bullet are not equally "bulged all the way around the case the bullet is not seated straight......it is canted. ...
    10 replies | 302 view(s)
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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