350gr VLD LAZZERONI 9.53(.375)Saturn®

Discussion in 'Long Range Hunting & Shooting' started by LazzInc, Jul 8, 2012.

  1. LazzInc

    LazzInc Well-Known Member

    Messages:
    237
    Joined:
    Nov 26, 2011
    Sierra has just re-released the .375 caliber 350gr Matchking bullet ,,,,,, .800+ BC ,,,,,

    they sent me a bunch of them, I am going to get them all lubricated and try them out in a special custom made 11 twist barrel, in Lazzeroni caliber 9.53 (.375) Saturn ,,,,,,

    on paper ballistics look impressive ,,,,,,,

    has anyone here used this bullet when Sierra sold them a few years ago ? ,,,,,,
     
  2. royinidaho

    royinidaho Writers Guild

    Messages:
    8,853
    Joined:
    Jan 20, 2004
    Many or at least several on here have shot the 350 SMK.

    I shoot them out of a 375 cartridge at a comfortable 3250 FPS MV and unbelievable accuracy. Twist is 1-10.

    Great to hear they are making another run of them. I'll try a box to see if anything has adversely changed. If they still shoot good I'll buy a lifetime supply.

    Over the next little while I'll be validating bc out towards 2000 yards. The published 0.818 seems darn close @ 4488' elevation.
     

  3. LazzInc

    LazzInc Well-Known Member

    Messages:
    237
    Joined:
    Nov 26, 2011
    Roy ,,,,,,,,

    well, I won't be shooting them quite that fast, but 2,945 fps with 28" P5 11 twist barrel out of the Lazz 375 Saturn is easily achievable at 66,000 PSI pressure ,,,,,

    the cool thing is that the rifle platform will be no larger than our other model 2012 hunting rifles, so at least a mortal man can carry it up the mountain ,,,,,

    and 2,888 ft pounds of energy on the animal at 1,000 yards ! I don't know of much else out there that can compare for a hunting type rifle ,,,,,

    these numbers are substantially higher than the 338 Lapua or anything else in the 338 bore, and the wind drift numbers are almost exactly the same as the big 338s ,,,,,,,,
     
  4. LazzInc

    LazzInc Well-Known Member

    Messages:
    237
    Joined:
    Nov 26, 2011
    we have modified a new Lazzeroni model 2012 reciever to accept special bottom metal and a 3-round removable mag box, with an internal mag box length of just over 3.9" ,,, which is long enough to allow the ogive of the 375 dia, 350gr Sierra bullet to be seated far out against the barrel lands and still fit in the magazine box ,,,,,,

    I should be shooting the new rifle in the raw very soon ,,,,,, I will post photos here when I do ,,,,,

    new ballistics data to 1,000 yards for the new Lazzeroni 9.53 (.375) Saturn round here http://www.lazzeroni.com/ct_lacart.htm ,,,,,
     
  5. Len Backus

    Len Backus Administrator Staff Member

    Messages:
    6,359
    Joined:
    May 2, 2001
    John, that should be pretty serious medicine.
     
  6. LazzInc

    LazzInc Well-Known Member

    Messages:
    237
    Joined:
    Nov 26, 2011
    Len ,,,,,,

    absolutely is serious medicine, when you consider that the energy on the animal at 1,000 yards with the big Lazz Saturn, is equivalent to the Lazzeroni 7.82 (.308) Warbird caliber at 400 yards !

    I mean hey, the Lazz 7.82 Warbird is one of THE most powerful hunting calibers in the world, and the new Saturn just blows it away ,,,,,,,,,

    certainly more recoil & carry weight up the mountain, so the new Lazz Saturn is not for everyone,,,,, but it is what it is, and there is not much else out there to match it, especially anything factory loaded ,,,,,,
     
  7. ChrisAtl

    ChrisAtl Well-Known Member

    Messages:
    198
    Joined:
    Aug 19, 2012
    I look forward to the pictures! Wow
     
  8. Rocky Mountain

    Rocky Mountain Well-Known Member

    Messages:
    386
    Joined:
    Sep 13, 2010
    Look forward to your updates on your new 375
     
  9. LazzInc

    LazzInc Well-Known Member

    Messages:
    237
    Joined:
    Nov 26, 2011
    First 100 yard group out of the New Lazzeroni 9.53 (.375) Saturn rifle today ,,,,, not bad at all ,,,,,,, (4-shots) 3/8" ,,,,

    loaded 99gr of reloader 19, federal 215M primer, 350gr Sierra HPBT with NP3 coating (lubrication), seated the ogive of the bullet right against the barrel lands ,,,

    corrected velocity for 72 degrees, with 28" barrel would be 2901 fps, right on my target velocity goal ,,,, all this at 65,700 PSI ,,,,, extreme velocity spread for the 4 chronograph ’d shots only 12 fps ,,,,,,,

    I will back up to 300 & 500 yards later this month for accuracy testing, with pictures of the rifle etc ,,,, then on to 1,000 yards + ,,,,
     

    Attached Files:

  10. MudRunner2005

    MudRunner2005 Well-Known Member

    Messages:
    10,079
    Joined:
    Oct 13, 2008
    What kind of recoil does a monster like that have? I'd love to see a loaded up cartridge if you don't mind posting a pic of one.

    Also, can't wait to see the rifle and the longer distance shots.
     
  11. paul2atlo8

    paul2atlo8 Well-Known Member

    Messages:
    65
    Joined:
    Dec 5, 2007
    John So far your accuracy is off to a good start, tell me about the case and how many
    reloads can one get, how heavy is the rifle ? pics please
     
  12. LazzInc

    LazzInc Well-Known Member

    Messages:
    237
    Joined:
    Nov 26, 2011
    Paul ,,,,,,,

    if you don't overload the case, resize the shoulder back too far or ream primer pockets etc, and anneal necks after every 5 shots or so, brass life for 85% of the cases should be around 15-20 firings ,,,,

    finished rifle specs are here with photo, http://www.lazzeroni.com/ct_rifles.htm the L2012LSP-XTLR in the Lazz 9.53 Saturn caliber has a special 3.940" inside length, 3 round mag box, ((see below)) instead of the one shown in the photo on the website ,,,, rifle weight same spec as this rifle on the Lazz website ,,,,

    Lazzeroni 9.53 Saturn 1,000 yard ballistics here http://www.lazzeroni.com/ct_lacart.htm ,,,,,

    mudrunner ,,,,,
    recoil is stout as one would expect, but easy enough to shoot with muzzle brake ,,,, photos of actual cartridge and 3 round mag box below ,,,,,

    photo at the bottom of the actual rifle in the raw ,,, prior to metal or stock finish, which is the way I have been shooting it so far ,,,,

    the entire Lazz rifle in the 9.53 saturn caliber is the same weight and external dimensions as all Lazzeroni L2012LSP-XTLR rifles ,,,, so at least it is still a medium weight HUNTING rifle that a sane person could carry in the field ,,,,
     

    Attached Files:

  13. sambo3006

    sambo3006 Well-Known Member

    Messages:
    1,343
    Joined:
    Jul 30, 2004
    Those are some very impressive ballistics from a rifle of manageable weight. Looks like it is a shooter as well!
     
  14. LazzInc

    LazzInc Well-Known Member

    Messages:
    237
    Joined:
    Nov 26, 2011
    Finally got the rifle all metal finished, permanent scope mounted and moved back to 300 Yards ,,,,

    all I can say is WOW ,,,,,, the LAZZERONI 9.53 Saturn caliber is SIGNIFICANTLY more than even the mighty 338 Lapua, in both trajectory to 1,000 yards and impact energy from point blank range to 1,500+ yards ,,,,

    all load data/specs etc is below ,,,, receiver is a standard length Lazzeroni action ,,,, with SEEKINs bottom metal, with 3-round detachable mag box ,,,,,
     

    Attached Files: