QuickLoad Request for 260 Rem, 129G ABLR

[deerhntr]

Fellow Reloaders,

Hope all is well out is Nosler reloading land and I hope Santa is bringing everyone Venison Backstrap for Christmas dinner!

I have a request for one of Santa's elves who has the quickload program. I would like to please ask for a simulation of 2 powders I am considering for my 260Rem, 129Grn Nosler LRAB load development. The specs are below.

My specs are:
Load: 260 Rem
Bullet: 129Grn Nosler LRAB
Powder: H4350, RL19
Case: Nolser Custom Brass.
Primer: Remington 9.5 LR
Gun: Browning Abolt II
Barrel: 22", 1:10" Twist
OAL: 2.8"

Also, If anyone has any tips on the LRAB bullet. What I have seen so far is a recommendation of 0.1" off the lands to start. I will need to do at least that for my rifle. My Land engagement is at 2.906" and my magazine is a tight 2.810". Was wondering if there are any other tidbits or insights.

Thanks,
Russ

 

[DrMike]

Cartridge          : .260 Rem
Bullet             : .264, 129, Nosler AccuBond LR 58943 G7
Useable Case Capaci: 46.036 grain H2O = 2.989 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-19

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   85    36.24   2254    1455   30230   8530     85.2    1.492
-18.0   88    37.15   2312    1531   32274   8835     86.6    1.452
-16.0   90    38.05   2370    1610   34461   9134     88.0    1.412
-14.0   92    38.96   2429    1690   36801   9427     89.3    1.373
-12.0   94    39.86   2489    1774   39309   9712     90.6    1.332
-10.0   96    40.77   2548    1860   41995   9987     91.8    1.290
-08.0   98    41.68   2608    1948   44861  10253     92.9    1.251
-06.0  100    42.58   2668    2038   47974  10508     93.9    1.212
-04.0  102    43.49   2728    2131   51301  10750     94.9    1.176  ! Near Maximum !
-02.0  105    44.39   2788    2226   54881  10979     95.8    1.140  ! Near Maximum !
+00.0  107    45.30   2848    2324   58732  11193     96.6    1.105  ! Near Maximum !
+02.0  109    46.21   2909    2424   62901  11390     97.3    1.072  !DANGEROUS LOAD-DO NOT USE!
+04.0  111    47.11   2969    2525   67397  11571     98.0    1.040  !DANGEROUS LOAD-DO NOT USE!
+06.0  113    48.02   3030    2630   72267  11734     98.6    1.009  !DANGEROUS LOAD-DO NOT USE!
+08.0  115    48.92   3091    2736   77543  11877     99.0    0.978  !DANGEROUS LOAD-DO NOT USE!
+10.0  117    49.83   3151    2844   83277  12000     99.4    0.949  !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    107    45.30   2994    2568   70713  11168     99.8    1.023  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    107    45.30   2659    2025   47976  10648     89.4    1.210

Cartridge          : .260 Rem
Bullet             : .264, 129, Nosler AccuBond LR 58943 G7
Useable Case Capaci: 46.036 grain H2O = 2.989 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Hodgdon H4350

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    34.40   2238    1434   31217   8047     87.9    1.486
-18.0   85    35.26   2292    1505   33256   8310     89.2    1.446
-16.0   87    36.12   2347    1577   35433   8567     90.4    1.408
-14.0   89    36.98   2401    1652   37749   8817     91.5    1.368
-12.0   91    37.84   2456    1728   40217   9061     92.5    1.329
-10.0   93    38.70   2511    1806   42848   9296     93.5    1.290
-08.0   95    39.56   2566    1885   45640   9522     94.5    1.252
-06.0   97    40.42   2620    1967   48594   9738     95.3    1.217
-04.0   99    41.28   2675    2050   51738   9944     96.1    1.182  ! Near Maximum !
-02.0  102    42.14   2730    2134   55092  10137     96.8    1.149  ! Near Maximum !
+00.0  104    43.00   2784    2221   58672  10319     97.5    1.116  ! Near Maximum !
+02.0  106    43.86   2839    2309   62497  10488     98.1    1.085  !DANGEROUS LOAD-DO NOT USE!
+04.0  108    44.72   2893    2398   66587  10642     98.6    1.055  !DANGEROUS LOAD-DO NOT USE!
+06.0  110    45.58   2948    2489   70965  10782     99.0    1.026  !DANGEROUS LOAD-DO NOT USE!
+08.0  112    46.44   3002    2581   75658  10906     99.4    0.998  !DANGEROUS LOAD-DO NOT USE!
+10.0  114    47.30   3056    2675   80693  11014     99.6    0.971  !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    43.00   2909    2424   69211  10217     99.9    1.040  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    104    43.00   2620    1966   48370   9950     91.4    1.215

Don't know about the elf business, but this should get you going. I do allow ~0.100 inches off the lands with both the AB and the ABLR. I treat bonded bullets identical to monolithic bullets.

 

[deerhntr]

Dr. Mike,

Thanks for the quick response! Much appreciated!

Merry Christmas!

Russ

 

[DrMike]

You are most welcome; and back at ya'--Merry Christmas and a blessed New Year!