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  • Larry Gibson's Avatar
    Today, 01:53 AM
    I've not worked with AA2700 but given it's burning rate it should do well with those 174s. Should be able to push them to 2200 - 2300 fps and maintain reasonable pressures in that load range. That IMR4895 should be a good powder for 130 - 140 gr...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    Yesterday, 11:02 PM
    No need to anneal but it'll shoot better with Bullseye.......I found that out using RBs, button bullets and Rapine 460210s. Start at 4 gr and work up to 8 gr in 1/2 gr increments. No need for fillet or wad. Larry Gibson
    12 replies | 686 view(s)
  • Larry Gibson's Avatar
    Yesterday, 10:55 PM
    If you run across any Hornady 175 RNSPs you might try them under 47 - 48 gr H4831. I've had excellent accuracy in several different milsurp 7x57s with that load. The flat base and long bearing surface works well in the "oversize" Mauser bores. ...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    Yesterday, 10:42 PM
    Scharfschuetze You might bump that load up a bit. Hornady Manual, 8th Edition, shows a max "Service Rifle" (AR with 20" barrel 9" twist) load of 25.8 gr with that bullet for 2800+ fps. You might just not pushing it fast enough. Larry Gibson
    3 replies | 48 view(s)
  • Larry Gibson's Avatar
    Yesterday, 10:19 PM
    Not worth wasting any more time........
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    Yesterday, 06:45 PM
    Here’s the pressure data I’ve taken so far with the Chilean M95 7x57 Mauser using an Oehler M43 PBL. The M95 is in excellent condition, has been “sporterized”with the original milsurp barrel now 22” long. All measurements are in “psi’s”as to...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-21-2017, 11:17 PM
    I HP them after loading using the Forster Trimmer with the Forster 1/8" HP tool. HP only needs to be 3/16" deep. Larry Gibson
    11 replies | 325 view(s)
  • Larry Gibson's Avatar
    03-20-2017, 08:07 PM
    Not being facetious but perhaps just using a 200 - 240 gr PB'd cast bullet for a light load might be a better option? They work well with those powders. Larry Gibson
    10 replies | 242 view(s)
  • Larry Gibson's Avatar
    03-20-2017, 08:05 PM
    Digital Dan I agree absolutely about the "gymnastics a bullet performs from muzzle to target are rather amazing in the best of circumstances and the nuance of several modes of precession a function of being out of balance, here and there, nose to...
    16 replies | 425 view(s)
  • Larry Gibson's Avatar
    03-20-2017, 05:27 PM
    You need to go back and look at the TM specification sheet again; The cartridge drawing gives the dimensions of the M80 Ball cartridge....2.8". That is a little shorter than the oal of the 30-06. No wonder we're having this discussion. The data...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-20-2017, 01:45 PM
    Some still have a problem differentiating between CUP pressures and transducer measured pressures. Same still can't differentiate the difference between actual cartridge psi's and the maximum MAP specification for the cartridge. Boer Mauser bolts...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-20-2017, 11:27 AM
    I concur with Bryan Litz who states in his very fine book on ballistics that there is no such thing as "over stabilization". A bullet is either stable for it's intended flight or it is not. If you watch bullets wander off down range before...
    16 replies | 425 view(s)
  • Larry Gibson's Avatar
    03-20-2017, 10:37 AM
    I've used 50/50 (COWWs + 2% tin then mix 50/50 with lead) in both the 429244 (solid and HP'd) and the 429640HP in the 44 magnum in revolvers, a Contender and rifles from 1350 to 1675 fps. While the 50/50 does work well I've found a 16 - 1 (lead to...
    12 replies | 466 view(s)
  • Larry Gibson's Avatar
    03-19-2017, 11:10 PM
    "Id pull a couple and see if total pull down is warranted." Same here. Larry Gibson
    10 replies | 229 view(s)
  • Larry Gibson's Avatar
    03-19-2017, 11:05 PM
    If you really feel the need for more case capacity and perhaps a longer throat the full length 35-303 would be my suggestion. Reamers are readily available and the reloading dies aren't as expensive as many wildcats are. However, keeping the 35...
    10 replies | 279 view(s)
  • Larry Gibson's Avatar
    03-19-2017, 07:40 PM
    All powders require a certain pressure level to "burn clean". Most often a heavier crimp and/or a magnum primer won't raise the pressure enough unless the load is borderline just below the needed pressure. Your 350 gr bullet is also a little light...
    5 replies | 200 view(s)
  • Larry Gibson's Avatar
    03-19-2017, 07:30 PM
    JHeath I no longer step over the caution tape with any action as I measure the pressures now. These days I do shoot loads in them having a measured comparable psi to the cartridges (actual measured psi's of original cartridges, not some quoted...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-19-2017, 11:57 AM
    What cast bullet ?
    8 replies | 220 view(s)
  • Larry Gibson's Avatar
    03-19-2017, 11:22 AM
    The barrel was pre threaded for SR Mauser actions and it fit the threads of the M91 perfectly. I had to just set the shank shoulder forward. The SR barrels tighten on the front of the receiver ring so it needs to be square. I then measured the...
    11 replies | 325 view(s)
  • Larry Gibson's Avatar
    03-19-2017, 11:08 AM
    Yup, some just can't get it through their head that the design specification for a cartridge and the design specification for an action are two different specifications. I also wonder if they comprehend the actual quality difference between various...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-18-2017, 12:41 PM
    Might try fire lapping with cast that fit the barrel. I have smoothed out several milsurp barrels that still had strong rifling. They all shot fairly well with cast afterward. I have the old fire lap kit that is now sold by Wheeler(?). some...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-18-2017, 12:36 PM
    My 35 Rem bolt action is built on an Argentine M91 action. I put a 26" pre threaded short chambered Shilen barrel on it I got from Brownell's. Twist is 14". No action work required other than I did put shoulder blocks in the mag to keep the loaded...
    11 replies | 325 view(s)
  • Larry Gibson's Avatar
    03-17-2017, 06:05 PM
    Here's my Oveido M1916 (Made in '28) I built back in '68. I got just the complete action for $8. Put it into a Richards Micro-Fit stock and put a Star 26" sporter barrel on it chambered in .308W. You can see the stock is cut out where I had put a...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-17-2017, 12:28 PM
    Scharfschuetze Couldn't agree with you more. The jacketed loads I use in my own SR Mausers of various original cartridges I keep at or below the C.I.P. MAPs and mostly below or at the SAAMI MAPs. Doing that has nothing to do with what the...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-17-2017, 11:05 AM
    SquidBilly Not sure why you want to stay with the Barnes TTSX(?) 120 - 140 gr bullets. I've found the milsurp Mausers with the .287+ groove diameters most often shoot more accurately with softer cup/core jacketed bullets, especially flat based...
    14 replies | 337 view(s)
  • Larry Gibson's Avatar
    03-17-2017, 10:33 AM
    Tackleberry41 You are absolutely correct, I'm not wasting any more time.....Multigunner just wants to argue, I'm moving on. Larry Gibson
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-16-2017, 11:16 PM
    Multigunner It is painfully obvious you've little or no experience measuring the pressure of any cartridge. It is also painfully obvious you've not bothered to read the SAAMI standards or really read the Wikipedia reports on the EVPAT pressure...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-16-2017, 08:57 PM
    Multigunner I stated earlier that the 7,000 psi ES along with the 35 fps ES of the 10 shot test of the German 7x57 ammunition conducted in 1898 was well within the allowable ES variations of SAAMI, C.I.P. and military standards of today (our...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-16-2017, 05:52 PM
    The information I've researched has the pressure measured in Europe back then during the development of the Mauser SR actions and the cartridges, including in Germany, as using the "bar" unit of measure. The figures were reported for the 7x57 in...
    81 replies | 1712 view(s)
  • Larry Gibson's Avatar
    03-16-2017, 05:40 PM
    "Why don't you dig up some of that vintage DWM 7mm loaded to drive a 154 gr bullet to 2900+ FPS and let us know what your stain gauge has to say about that." Easy enough. The DWM, PS 50 and PS 51 (Spanish made) 7x57 were both loaded with 154 gr...
    81 replies | 1712 view(s)
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About ckcadavona

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About ckcadavona
Biography:
HI, CA, USAF
Location:
Temecula, CA
Interests:
Boolits, Milsurp's, IDPA, learning
Occupation:
USAF

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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