Nosler E-Tip in .300 RUM

Discussion in 'Reloading' started by mtmuley, Dec 30, 2007.

  1. mtmuley

    mtmuley Well-Known Member

    Messages:
    240
    Joined:
    Apr 22, 2007
    Hi all, Haven't visited in awhile, but I couldn't help myself, and I bought a box of 180 gr E-Tips. Anyone loading them? Just curious as to what powders are showing promise, and the best velocities. I use primarily RL-25 and Retumbo, so am going to start there. Any info will be welcomed and appreciated. mtmuley
     
  2. elkstalker300

    elkstalker300 Well-Known Member

    Messages:
    227
    Joined:
    Nov 18, 2004
    LOL I havent even heard of E-Tips, but I shoot alot of 180 gr accubonds
     

  3. POP

    POP Well-Known Member

    Messages:
    1,478
    Joined:
    Jul 25, 2001
    Cartridge : .300 Rem Ultra Mag
    Bullet : .308, 180, Nosler E-Tip preliminary
    Cartridge O.A.L. L6: 3.650 inch or 92.71 mm
    Barrel Length : 26.0 inch or 660.4 mm
    Powder : Hodgdon Retumbo

    Predicted data by increasing and decreasing the given charge,
    incremented in steps of 2.0% of nominal charge.
    CAUTION: Figures exceed maximum and minimum recommended loads !

    Step Fill. Charge Vel. Energy Pmax Pmuz Prop.Burnt B_Time
    % % Grains fps ft.lbs psi psi % ms

    -20.0 83 77.60 2550 2598 32629 10863 97.8 1.657
    -18.0 85 79.54 2613 2728 34881 11112 98.6 1.615
    -16.0 88 81.48 2675 2861 37302 11329 99.3 1.575
    -14.0 90 83.42 2738 2996 39910 11513 99.7 1.535
    -12.0 92 85.36 2800 3133 42718 11661 100.0 1.495
    -10.0 94 87.30 2861 3271 45746 11773 100.0 1.457
    -08.0 96 89.24 2921 3410 49013 11875 100.0 1.419
    -06.0 98 91.18 2980 3550 52542 11973 100.0 1.380
    -04.0 100 93.12 3039 3691 56355 12068 100.0 1.337 ! Near Maximum !
    -02.0 102 95.06 3097 3834 60483 12158 100.0 1.295 ! Near Maximum !
    +00.0 104 97.00 3154 3977 64957 12244 100.0 1.256 !DANGEROUS LOAD-DO NOT USE!
    +02.0 106 98.94 3211 4122 69806 12326 100.0 1.217 !DANGEROUS LOAD-DO NOT USE!
    +04.0 108 100.88 3268 4268 75023 12404 100.0 1.180 !DANGEROUS LOAD-DO NOT USE!
    +06.0 110 102.82 3324 4416 80633 12476 100.0 1.144 !DANGEROUS LOAD-DO NOT USE!
    +08.0 113 104.76 3380 4565 86692 12544 100.0 1.110 !DANGEROUS LOAD-DO NOT USE!
    +10.0 115 106.70 3435 4717 93244 12606 100.0 1.077 !DANGEROUS LOAD-DO NOT USE!

    Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
    Data for burning rate increased by 10% relative to nominal value:
    +Ba 104 97.00 3267 4265 80069 11830 100.0 1.158 !DANGEROUS LOAD-DO NOT USE!
    Data for burning rate decreased by 10% relative to nominal value:
    -Ba 104 97.00 2981 3553 51398 12829 99.9 1.385
     
  4. mtmuley

    mtmuley Well-Known Member

    Messages:
    240
    Joined:
    Apr 22, 2007
    Thanks, POP. That should get me started. It will be hard to top my 200 gr Accubond load, but I just can't leave well enough alone. If only a 200 gr E-Tip. mtmuley