Quick load Request 338 Lapua

Alaska

Alaska

Handloader
Aug 20, 2006
1,088
539
CA Mesa LR
338 Lapua
285 ELDM
Retumbo Powder
Fed 215
Lapua Case
COAL 3.625”

Target Velocity needed 2745 FPS with the 285 ELDM
Thank you
 
Code: 
Cartridge          : .338 Lapua Mag.
Bullet             : .338, 285, Hornady ELD-M 33381 G7
Useable Case Capaci: 90.908 grain H2O = 5.903 cm³
Cartridge O.A.L. L6: 3.625 inch = 92.08 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon Retumbo

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   98    82.26   2425    3721   42061  11662     99.9    1.543
-09.0   99    83.17   2453    3809   43561  11733    100.0    1.518
-08.0  100    84.09   2481    3897   45120  11795    100.0    1.493
-07.0  101    85.00   2509    3985   46741  11850    100.0    1.468
-06.0  102    85.92   2537    4074   48426  11903    100.0    1.444
-05.0  103    86.83   2565    4163   50179  11955    100.0    1.420
-04.0  104    87.74   2592    4253   52003  12006    100.0    1.397  ! Near Maximum !
-03.0  105    88.66   2620    4343   53902  12056    100.0    1.374  ! Near Maximum !
-02.0  106    89.57   2647    4434   55878  12105    100.0    1.351  ! Near Maximum !
-01.0  107    90.49   2674    4526   57938  12153    100.0    1.329  ! Near Maximum !
+00.0  108    91.40   2701    4618   60083  12199    100.0    1.308  ! Near Maximum !
+01.0  110    92.31   2728    4711   62319  12245    100.0    1.287  !DANGEROUS LOAD-DO NOT USE!
+02.0  111    93.23   2755    4804   64653  12289    100.0    1.266  !DANGEROUS LOAD-DO NOT USE!
+03.0  112    94.14   2782    4898   67085  12332    100.0    1.245  !DANGEROUS LOAD-DO NOT USE!
+04.0  113    95.06   2809    4993   69625  12373    100.0    1.225  !DANGEROUS LOAD-DO NOT USE!
+05.0  114    95.97   2836    5088   72271  12414    100.0    1.205  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    108    91.40   2761    4824   67326  11925    100.0    1.251  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    108    91.40   2627    4366   53524  12534    100.0    1.373  ! Near Maximum !

Close; but is it close enough to satisfy?
 
DrMike said:
Code: 
Cartridge          : .338 Lapua Mag.
Bullet             : .338, 285, Hornady ELD-M 33381 G7
Useable Case Capaci: 90.908 grain H2O = 5.903 cm³
Cartridge O.A.L. L6: 3.625 inch = 92.08 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Hodgdon Retumbo

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   98    82.26   2425    3721   42061  11662     99.9    1.543
-09.0   99    83.17   2453    3809   43561  11733    100.0    1.518
-08.0  100    84.09   2481    3897   45120  11795    100.0    1.493
-07.0  101    85.00   2509    3985   46741  11850    100.0    1.468
-06.0  102    85.92   2537    4074   48426  11903    100.0    1.444
-05.0  103    86.83   2565    4163   50179  11955    100.0    1.420
-04.0  104    87.74   2592    4253   52003  12006    100.0    1.397  ! Near Maximum !
-03.0  105    88.66   2620    4343   53902  12056    100.0    1.374  ! Near Maximum !
-02.0  106    89.57   2647    4434   55878  12105    100.0    1.351  ! Near Maximum !
-01.0  107    90.49   2674    4526   57938  12153    100.0    1.329  ! Near Maximum !
+00.0  108    91.40   2701    4618   60083  12199    100.0    1.308  ! Near Maximum !
+01.0  110    92.31   2728    4711   62319  12245    100.0    1.287  !DANGEROUS LOAD-DO NOT USE!
+02.0  111    93.23   2755    4804   64653  12289    100.0    1.266  !DANGEROUS LOAD-DO NOT USE!
+03.0  112    94.14   2782    4898   67085  12332    100.0    1.245  !DANGEROUS LOAD-DO NOT USE!
+04.0  113    95.06   2809    4993   69625  12373    100.0    1.225  !DANGEROUS LOAD-DO NOT USE!
+05.0  114    95.97   2836    5088   72271  12414    100.0    1.205  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    108    91.40   2761    4824   67326  11925    100.0    1.251  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    108    91.40   2627    4366   53524  12534    100.0    1.373  ! Near Maximum !

Close; but is it close enough to satisfy?
Click to expand...
Your the best Doctor Mike !
 
A couple of alternative propellants. Or, you may try loading to a longer COAL whoich would allow more propellant.

Code: 
Cartridge          : .338 Lapua Mag.
Bullet             : .338, 285, Hornady ELD-M 33381 G7
Useable Case Capaci: 90.908 grain H2O = 5.903 cm³
Cartridge O.A.L. L6: 3.625 inch = 92.08 mm
Barrel Length      : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 61000 psi, or 420 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

41 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type          Filling/Loading Ratio  Charge    Charge   Vel. Prop.Burnt P max  P muzz  B_Time
                                      %     Grains    Gramm   fps     %       psi     psi    ms
---------------------------------  -----------------------------------------------------------------
ADI AR 2218                        109.1     97.4     6.31    2765    98.6    61000   14399   1.281  ! Near Maximum !
Vihtavuori N570 *C                 105.2     93.0     6.02    2749    98.4    61000   14062   1.305  ! Near Maximum !
ReloadSwiss RS 76 *C               101.9     91.9     5.95    2748   100.0    61000   12765   1.299  ! Near Maximum !
Alliant Reloder-33 *C              107.1     97.4     6.31    2741    98.6    61000   13927   1.305  ! Near Maximum !
ReloadSwiss RS 80 *C               104.3     94.9     6.15    2726    99.7    61000   13397   1.315  ! Near Maximum !
Hodgdon Retumbo                    108.9     91.8     5.95    2713   100.0    61000   12218   1.299  ! Near Maximum !
 
My target turrent is setup for 2745 for the 285 ELDM so that’s the reason for the velocity .
I have some loaded now at 92.5 but haven’t cronograph them yet . It’s going to be close !

26” barrel
 
With a 26 inch barrel, you should make it.

Code: 
Cartridge          : .338 Lapua Mag.
Bullet             : .338, 285, Hornady ELD-M 33381 G7
Useable Case Capaci: 90.908 grain H2O = 5.903 cm³
Cartridge O.A.L. L6: 3.625 inch = 92.08 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Hodgdon Retumbo

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   98    82.26   2478    3884   42061  10581    100.0    1.611
-09.0   99    83.17   2505    3973   43561  10633    100.0    1.585
-08.0  100    84.09   2533    4061   45120  10681    100.0    1.559
-07.0  101    85.00   2561    4150   46741  10729    100.0    1.534
-06.0  102    85.92   2588    4240   48426  10776    100.0    1.509
-05.0  103    86.83   2616    4330   50179  10822    100.0    1.484
-04.0  104    87.74   2643    4421   52003  10867    100.0    1.460  ! Near Maximum !
-03.0  105    88.66   2670    4512   53902  10911    100.0    1.437  ! Near Maximum !
-02.0  106    89.57   2697    4604   55878  10955    100.0    1.414  ! Near Maximum !
-01.0  107    90.49   2724    4696   57938  10997    100.0    1.391  ! Near Maximum !
+00.0  108    91.40   2751    4788   60083  11038    100.0    1.369  ! Near Maximum !
+01.0  110    92.31   2777    4882   62319  11078    100.0    1.347  !DANGEROUS LOAD-DO NOT USE!
+02.0  111    93.23   2804    4976   64653  11116    100.0    1.326  !DANGEROUS LOAD-DO NOT USE!
+03.0  112    94.14   2831    5070   67085  11154    100.0    1.305  !DANGEROUS LOAD-DO NOT USE!
+04.0  113    95.06   2857    5166   69625  11190    100.0    1.284  !DANGEROUS LOAD-DO NOT USE!
+05.0  114    95.97   2883    5262   72271  11226    100.0    1.264  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    108    91.40   2808    4990   67326  10790    100.0    1.311  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    108    91.40   2679    4542   53524  11341    100.0    1.436  ! Near Maximum !
 
DrMike said:
With a 26 inch barrel, you should make it.

Code: 
Cartridge          : .338 Lapua Mag.
Bullet             : .338, 285, Hornady ELD-M 33381 G7
Useable Case Capaci: 90.908 grain H2O = 5.903 cm³
Cartridge O.A.L. L6: 3.625 inch = 92.08 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Hodgdon Retumbo

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   98    82.26   2478    3884   42061  10581    100.0    1.611
-09.0   99    83.17   2505    3973   43561  10633    100.0    1.585
-08.0  100    84.09   2533    4061   45120  10681    100.0    1.559
-07.0  101    85.00   2561    4150   46741  10729    100.0    1.534
-06.0  102    85.92   2588    4240   48426  10776    100.0    1.509
-05.0  103    86.83   2616    4330   50179  10822    100.0    1.484
-04.0  104    87.74   2643    4421   52003  10867    100.0    1.460  ! Near Maximum !
-03.0  105    88.66   2670    4512   53902  10911    100.0    1.437  ! Near Maximum !
-02.0  106    89.57   2697    4604   55878  10955    100.0    1.414  ! Near Maximum !
-01.0  107    90.49   2724    4696   57938  10997    100.0    1.391  ! Near Maximum !
+00.0  108    91.40   2751    4788   60083  11038    100.0    1.369  ! Near Maximumn !
+01.0  110    92.31   2777    4882   62319  11078    100.0    1.347  !DANGEROUS LOAD-DO NOT USE!
+02.0  111    93.23   2804    4976   64653  11116    100.0    1.326  !DANGEROUS LOAD-DO NOT USE!
+03.0  112    94.14   2831    5070   67085  11154    100.0    1.305  !DANGEROUS LOAD-DO NOT USE!
+04.0  113    95.06   2857    5166   69625  11190    100.0    1.284  !DANGEROUS LOAD-DO NOT USE!
+05.0  114    95.97   2883    5262   72271  11226    100.0    1.264  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 5% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 5% relative to nominal value:
+Ba    108    91.40   2808    4990   67326  10790    100.0    1.311  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba    108    91.40   2679    4542   53524  11341    100.0    1.436  ! Near Maximum !
Click to expand...
 
I might have to adjust my loaded rounds down a tad to 91.3 of Retumbo for the 2745 fps .
I also changed the COAL to mag length 3.720” .

Thanks for the help !
 
Last edited:
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