Rl 26 in 338 rum

[Rjquick87]

Anyone have any load data in a 338 rum useing rl 26 with 250 and 300 gr accubonds?

 

[DrMike]

Cartridge          : .338 Rem Ultra Mag
Bullet             : .338, 250, Nosler AccuBond 57287
Useable Case Capaci: 93.830 grain H2O = 6.092 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-26 *C

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   86    79.92   2569    3664   44036  11367    100.0    1.474
-09.0   87    80.81   2597    3744   45651  11423    100.0    1.450
-08.0   88    81.70   2625    3824   47316  11478    100.0    1.427
-07.0   89    82.58   2652    3904   49034  11532    100.0    1.404
-06.0   90    83.47   2679    3985   50811  11586    100.0    1.381
-05.0   91    84.36   2706    4066   52651  11638    100.0    1.359
-04.0   92    85.25   2733    4147   54557  11690    100.0    1.337  ! Near Maximum !
-03.0   93    86.14   2760    4229   56530  11741    100.0    1.317  ! Near Maximum !
-02.0   94    87.02   2787    4311   58574  11791    100.0    1.296  ! Near Maximum !
-01.0   95    87.91   2813    4393   60691  11839    100.0    1.275  ! Near Maximum !
+00.0   96    88.80   2840    4476   62885  11887    100.0    1.256  ! Near Maximum !
+01.0   96    89.69   2866    4559   65158  11934    100.0    1.236  !DANGEROUS LOAD-DO NOT USE!
+02.0   97    90.58   2892    4643   67515  11980    100.0    1.217  !DANGEROUS LOAD-DO NOT USE!
+03.0   98    91.46   2918    4727   69959  12025    100.0    1.198  !DANGEROUS LOAD-DO NOT USE!
+04.0   99    92.35   2944    4812   72493  12069    100.0    1.180  !DANGEROUS LOAD-DO NOT USE!
+05.0  100    93.24   2970    4897   75122  12111    100.0    1.162  !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     96    88.80   2943    4808   77901  11449    100.0    1.155  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     96    88.80   2679    3985   48410  12489     99.7    1.395


Cartridge          : .338 Rem Ultra Mag
Bullet             : .338, 300, Nosler AccuBond 54851
Useable Case Capaci: 89.671 grain H2O = 5.822 cm³
Cartridge O.A.L. L6: 3.600 inch = 91.44 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-26 *C

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   83    73.80   2354    3691   44713  10636    100.0    1.590
-09.0   84    74.62   2378    3766   46257  10696    100.0    1.565
-08.0   85    75.44   2401    3841   47852  10757    100.0    1.541
-07.0   86    76.26   2425    3916   49499  10816    100.0    1.518
-06.0   87    77.08   2448    3992   51199  10875    100.0    1.495
-05.0   88    77.90   2471    4068   52955  10932    100.0    1.472
-04.0   89    78.72   2494    4144   54769  10989    100.0    1.450  ! Near Maximum !
-03.0   90    79.54   2517    4220   56642  11046    100.0    1.428  ! Near Maximum !
-02.0   90    80.36   2540    4297   58578  11101    100.0    1.407  ! Near Maximum !
-01.0   91    81.18   2563    4375   60577  11155    100.0    1.386  ! Near Maximum !
+00.0   92    82.00   2585    4453   62643  11209    100.0    1.366  ! Near Maximum !
+01.0   93    82.82   2608    4531   64779  11262    100.0    1.346  !DANGEROUS LOAD-DO NOT USE!
+02.0   94    83.64   2631    4610   66986  11314    100.0    1.326  !DANGEROUS LOAD-DO NOT USE!
+03.0   95    84.46   2653    4689   69268  11365    100.0    1.307  !DANGEROUS LOAD-DO NOT USE!
+04.0   96    85.28   2675    4768   71628  11415    100.0    1.288  !DANGEROUS LOAD-DO NOT USE!
+05.0   97    86.10   2698    4848   74069  11464    100.0    1.270  !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     92    82.00   2669    4745   76885  10826    100.0    1.262  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     92    82.00   2457    4023   48560  11773    100.0    1.511

I can provide you with a QL projection.

 

[JD338]

I have had excellent results with Retumbo and IMR8133 for both bullet weights. The 250 gr AB with Retumbo is my go to load and I'm getting 2" groups at 800 yards.

JD338

 

[Rjquick87]

Thank you

 

[jmad_81]

I run RL26 in my 338 RUM with the 265 ABLR and have had stellar results. Getting 2940 out of a 26" tube.

 

[Charlie-NY]

I run 89.0gr RE26 under the 250gr AccuBond & 250gr Berger EH bullet. Both shoot very well at 400yds at just under 3,000 ft/sec. 91gr works with the 236 Hammer bullet and will get you to 3,100 ft/sec in a 26" bbl.