Help please! 260 rem and the 130 ab vs the 129 ablr w/RL17

[rmarshall]

Ok guys looking at the new data for the new 129 ablr Nosler shows a 45 grain max with a load density volume of only 97%, if I remember right and seeing the 130 ab with a QL max at 41.82 grains, would there really be that much difference? Maybe DR. Or someone could run a QL, and since you all are smarter than me you could enlighten me. Thanks

 

[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-17

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   78    34.80   2330    1555   30624   9131     94.9    1.470
-18.0   80    35.67   2388    1634   32681   9392     96.0    1.432
-16.0   82    36.54   2446    1714   34878   9638     97.0    1.395
-14.0   84    37.41   2505    1797   37226   9867     97.8    1.359
-12.0   86    38.28   2562    1881   39738  10076     98.5    1.318
-10.0   88    39.15   2620    1966   42425  10267     99.1    1.277
-08.0   90    40.02   2678    2053   45302  10436     99.5    1.238
-06.0   92    40.89   2734    2142   48387  10583     99.8    1.201
-04.0   94    41.76   2791    2231   51693  10707    100.0    1.166  ! Near Maximum !
-02.0   96    42.63   2847    2322   55242  10807    100.0    1.131  ! Near Maximum !
+00.0   98    43.50   2902    2413   59054  10898    100.0    1.098  ! Near Maximum !
+02.0  100    44.37   2957    2505   63156  10985    100.0    1.066  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    45.24   3012    2598   67575  11069    100.0    1.035  !DANGEROUS LOAD-DO NOT USE!
+06.0  104    46.11   3066    2692   72336  11149    100.0    1.005  !DANGEROUS LOAD-DO NOT USE!
+08.0  106    46.98   3120    2788   77480  11225    100.0    0.976  !DANGEROUS LOAD-DO NOT USE!
+10.0  107    47.85   3173    2884   83043  11297    100.0    0.948  !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     98    43.50   3014    2602   72157  10457    100.0    1.017  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     98    43.50   2732    2137   47700  11159     97.7    1.205

Cartridge          : .260 Rem
Bullet             : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 46.056 grain H2O = 2.990 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Alliant Reloder-17

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   78    34.80   2326    1562   30798   9167     95.2    1.470
-18.0   80    35.67   2384    1641   32869   9427     96.2    1.433
-16.0   82    36.54   2442    1722   35081   9670     97.1    1.396
-14.0   84    37.41   2500    1804   37444   9897     97.9    1.359
-12.0   86    38.28   2558    1889   39969  10104     98.6    1.318
-10.0   88    39.15   2615    1974   42676  10291     99.1    1.277
-08.0   90    40.02   2672    2061   45570  10458     99.6    1.239
-06.0   92    40.89   2729    2150   48673  10601     99.8    1.201
-04.0   94    41.76   2785    2239   51999  10722    100.0    1.166  ! Near Maximum !
-02.0   96    42.63   2841    2329   55569  10821    100.0    1.131  ! Near Maximum !
+00.0   98    43.50   2896    2421   59405  10912    100.0    1.098  ! Near Maximum !
+02.0  100    44.37   2950    2513   63531  11000    100.0    1.066  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    45.24   3005    2606   67974  11085    100.0    1.035  !DANGEROUS LOAD-DO NOT USE!
+06.0  104    46.11   3058    2700   72767  11166    100.0    1.005  !DANGEROUS LOAD-DO NOT USE!
+08.0  106    46.98   3112    2795   77939  11243    100.0    0.977  !DANGEROUS LOAD-DO NOT USE!
+10.0  107    47.85   3165    2891   83538  11316    100.0    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     98    43.50   3006    2609   72580  10474    100.0    1.017  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     98    43.50   2727    2147   47970  11195     97.9    1.205

Not surprisingly, the projections are essentially identical.

 

[rmarshall]

Thanks Doc, you are awesome, got a bunch of 130 ab's that I got to work with.

 

[gerry]

I didn't know they had data out for the 129 gr ABLR, thankfully the load I settled on of 44 gr H 4350 for 2900 fps comes in a bit below Nosler's data. It definitely looks like the ABLR bullet can handle higher charges of powder and get more speed than other 129-130 gr bullets.

 

[DrMike]

I didn't know they had data out for the 129 gr ABLR, thankfully the load I settled on of 44 gr H 4350 for 2900 fps comes in a bit below Nosler's data. It definitely looks like the ABLR bullet can handle higher charges of powder and get more speed than other 129-130 gr bullets.

Gerry, many of the ABLR bullets are included in this latest QL data update (dated 12 Jan 2014).

 

[SJB358]

That 129 ABLR would be really cool in the 260. Gerry, you really put the hammer down on a bunch of deer with them right.

 

[Songdog]

I ran both IMR4350 and H4350 behind the 130 AccuBond in my 23" barreled. .260. Charges between 41.5 and 44 grains showed very similar velocities to the ones listed above with corresponding charges...

I think 2850-2900 is a very reasonable expectation of a 22" barreled .260 with 130 grain bullets. And a 129/130 with a .550ish BC at 2900ish is a madman on stuff with fur.