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Warning: Bullet selections are specific, and loads are not valid with substitutions of different bullets of the same weight. Variations in bullet material and length will alter net case capacity,  pressure and velocity results. Primer selection is specific and primer types are not interchangeable. These data represents maximum loads in our firearms and test equipment and may easily be excessive in other applications. All loads should be reduced by 3%,  and developed following safe handloading practices as represented in established reloading manuals produced by component manufacturers. Presentation of these loads does not constitute a solicitation for their use, nor a recommendation.
 

Cartridge: 300 Remington Ultra Mag

  Firearm: Remington Model 700 CDL   Max COL: 3.600″
  Bullet Diameter: 0.308″   Primer: CCI 250
  Barrel: 26″   Reloading Dies: Hornady
  Max case length: 2.850″ (73.50mm)   Group: Distance 100 yards – Three shots
 
COL and Capacity   Load Data & Performance
Bullet Type Bullet
Weight
C.O.L.
Inches
Net
Grains
Water
  Powder Charge
Grains
Muzzle
Velocity
FPS
Muzzle
Energy Ft/Lbs
Remington PSP 125 3.405 107.79   MagPro 103.0 3568 3534
Remington PSP 125 3.405 107.79   Re25 103.0 3612 3621
Remington AccuTip 125 3.585 106.84   MagPro 103.5 3617 3630
Remington AccuTip 125 3.585 106.84   Re25 102.0 3607 3612
Remington AccuTip 125 3.585 106.84   IMR7828 98.5 3618 3633
Barnes TTSX 130 3.545 103.71   MagPro 100.0 3559 3657
Barnes TTSX 130 3.545 103.71   Re25 98.5 3551 3639
Barnes TTSX 130 3.545 103.71   IMR 7828 95.5 3572 3683
Barnes TTSX 130 3.545 103.71   RS Magnum 103.0 3611 3764
Hornady SP 130 3.520 107.44   MagPro 103.0 3575 3689
Hornady SP 130 3.520 107.44   4000-MR 94.5 3526 3589
Hornady SP 130 3.520 107.44   Re25 102.0 3578 3696
Hornady SP 130 3.520 107.44   IMR7828 98.5 3592 3724
Sierra 135 3.555 106.75   MagPro 102.0 3537 3750
Sierra 135 3.555 106.75   4000-MR 93.5 3483 3636
Sierra 135 3.555 106.75   Re25 101.0 3536 3749
Sierra 135 3.555 106.75   H1000 103.0 3484 3638
Sierra 135 3.555 106.75   IMR7828 97.0 3514 3702
North Fork SS 150 3.600 105.71   MagPro 99.0 3380 3805
North Fork SS 150 3.600 105.71   4000-MR 91.0 3331 3696
North Fork SS 150 3.600 105.71   Re25 97.5 3359 3757
North Fork SS 150 3.600 105.71   RS Magnum 102.0 3389 3824
Winchester PP 150 3.560 106.09   Re25 98.0 3384 3813
Winchester PP 150 3.560 106.09   H1000 100.5 3370 3783
Winchester PP 150 3.560 106.09   IMR 7928 95.0 3413 3879
Winchester PP 150 3.560 106.09   N570 106.5 3461 3990
Barnes TTSX BT 150 3.600 102.40   Re25 95.5 3385 3816
Barnes TTSX BT 150 3.600 102.40   IMR7828 92.0 3390 3828
Barnes TTSX BT 150 3.600 102.40   RS Magnum 99.0 3383 3813
Barnes TTSX BT 150 3.600 102.40   N570 103.5 3448 3960
Hornady BTSP 150 3.575 106.85   Re25 98.5 3386 3819
Hornady BTSP 150 3.575 106.85   H1000 101.0 3363 3766
Hornady BTSP 150 3.575 106.85   RS Magnum 102.5 3390 3828
Hornady BTSP 150 3.575 106.85   N570 107.0 3463 3995
Sierra SPBT 165 3.575 104.58   Re25 95.0 3245 3859
Sierra SPBT 165 3.575 104.58   H1000 98.0 3274 3928
Sierra SPBT 165 3.575 104.58   IMR7828 92.0 3292 3976
Sierra SPBT 165 3.575 104.58   N570 103.5 3362 4140
North Fork SS 165 3.600 104.02   Re25 94.5 3260 3895
North Fork SS 165 3.600 104.02   H1000 97.5 3267 3912
North Fork SS 165 3.600 104.02   IMR7828 92.0 3303 3997
North Fork SS 165 3.600 104.02   N570 103 3354 4122
*Barnes TTSX 168 3.600 100.31   Re25 92.0 3246 3930
Barnes TTSX 168 3.600 100.31   H1000 94.5 3238 3912
Barnes TTSX 168 3.600 100.31   RS Magnum 96.0 3271 3991
Barnes TTSX 168 3.600 100.31   N570 100.00 3332 4141
CT Ballistic Silvertip 168 3.600 104.67   Re25 98.0 3399 3849
CT Ballistic Silvertip 168 3.600 104.67   H4831SC 93.5 3352 3743
CT Ballistic Silvertip 168 3.600 104.67   H1000 101.0 3407 3867
CT Ballistic Silvertip 168 3.600 104.67   IMR7828 95.0 3432 3924
Berger VLD Hunting 175 3.600 102.89   Re25 93.0 3205 3991
Berger VLD Hunting 175 3.600 102.89   Retumbo 100.0 3244 4089
Berger VLD Hunting 175 3.600 102.89   RS Magnum 97.0 3231 4056
Berger VLD Hunting 175 3.600 102.89   N570 101.5 3313 4265
Sierra SP 180 3.600 103.53   Re25 93.0 3173 4024
Sierra SP 180 3.600 103.53   H1000 96.0 3186 4056
Sierra SP 180 3.600 103.53   Retumbo 100.0 3213 4127
Sierra SP 180 3.600 103.53   N570 101.0 3269 4270
Barnes TTSX 180 3.600 99.00   Re25 90.0 3152 3970
Barnes TTSX 180 3.600 99.00   H1000 93.0 3164 4002
Barnes TTSX 180 3.600 99.00   IMR7828 87.0 3172 4022
Barnes TTSX 180 3.600 99.00   N570 98.0 3275 4286
North Fork SS 180 3.600 102.04   Re25 92.0 3176 4031
North Fork SS 180 3.600 102.04   Retumbo 99.0 3218 4139
North Fork SS 180 3.600 102.04   H870 103.0 3212 4123
North Fork SS 180 3.600 102.04   N570 100.0 3273 4282
Nosler Partition SP 180 3.600 102.89   H1000 95.5 3190 4066
Nosler Partition SP 180 3.600 102.89   Retumbo 99.5 3218 4139
Nosler Partition SP 180 3.600 102.89   IMR7828 90.0 3204 4104
Nosler Partition SP 180 3.600 102.89   RS Magnum 96.5 3186 4057
Hornady BTSP 190 3.575 100.83   Re25 90.0 3076 3993
Hornady BTSP 190 3.575 100.83   H1000 93.0 3091 4030
Hornady BTSP 190 3.575 100.83   Retumbo 97.0 3122 5576
Hornady BTSP 190 3.575 100.83   IMR7828 87.0 3100 4054
North Fork SS 200 3.600 100.20   Re25 89.0 3018 4045
North Fork SS 200 3.600 100.20   Retumbo 95.5 3054 4141
North Fork SS 200 3.600 100.20   RS Magnum 92.5 3037 4097
North Fork SS 200 3.600 100.20   N570 96.5 3113 4304
Nosler AccuBond 200 3.600 98.56   Re25 88.0 3015 4036
Nosler AccuBond 200 3.600 98.56   Retumbo 94.5 3052 4136
Nosler AccuBond 200 3.600 98.56   IMR7828 85.0 3037 4096
Nosler AccuBond 200 3.600 98.56   N570 96.0 3128 4344
All IMR 7828 loads are standard cut, not SSC
*Swapped from position in photo