QL request 7mm rem

[treesnake]

Howdy. Got my hands on some 160 gr. Failsafe bullets. Would like to use the new RL 26 and RL 23 to see what works better. As always, thanks for the help friends.

 

[Guy Miner]

Never tried either of those powders, but good old RL-22 has worked GREAT for me with 160's and the 7mm Rem mag.

 

[FOTIS]

Looking for a starting point?

 

[TackDriver284]

Howdy. Got my hands on some 160 gr. Failsafe bullets. Would like to use the new RL 26 and RL 23 to see what works better. As always, thanks for the help friends.

Since you did not mention barrel length, I set it for 24 inches. I have had great results with RL25 with heavy bullets. Never tried RL23 or RL26, but RL26 is similar in burn rate as RL25


Cartridge : 7 mm Rem. Mag.(SAAMI)
Bullet : .284, 160, Nosler CT FailSafe 53160
Useable Case Capaci: 74.145 grain H2O = 4.814 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-23

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   87    58.50   2643    2482   40170  11352    100.0    1.459
-09.0   88    59.15   2671    2534   41497  11424    100.0    1.437
-08.0   89    59.80   2698    2586   42860  11492    100.0    1.415
-07.0   90    60.45   2725    2639   44261  11558    100.0    1.394
-06.0   91    61.10   2752    2691   45704  11624    100.0    1.374
-05.0   92    61.75   2779    2744   47192  11689    100.0    1.354
-04.0   93    62.40   2806    2797   48725  11753    100.0    1.334
-03.0   94    63.05   2832    2850   50306  11817    100.0    1.314
-02.0   95    63.70   2859    2904   51936  11880    100.0    1.295  ! Near Maximum !
-01.0   96    64.35   2885    2957   53616  11942    100.0    1.276  ! Near Maximum !
+00.0   97    65.00   2911    3011   55349  12003    100.0    1.258  ! Near Maximum !
+01.0   98    65.65   2937    3065   57136  12064    100.0    1.240  ! Near Maximum !
+02.0   99    66.30   2963    3119   58979  12123    100.0    1.222  ! Near Maximum !
+03.0  100    66.95   2989    3174   60880  12182    100.0    1.205  !DANGEROUS LOAD-DO NOT USE!
+04.0  101    67.60   3015    3229   62841  12240    100.0    1.188  !DANGEROUS LOAD-DO NOT USE!
+05.0  102    68.25   3040    3284   64864  12297    100.0    1.171  !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     97    65.00   3015    3229   67105  11613    100.0    1.162  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     97    65.00   2753    2692   43769  12471     99.4    1.388

Cartridge : 7 mm Rem. Mag.(SAAMI)
Bullet : .284, 160, Nosler CT FailSafe 53160
Useable Case Capaci: 74.145 grain H2O = 4.814 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-26

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    61.20   2697    2584   39611  12647     99.5    1.467
-09.0   84    61.88   2728    2643   41007  12749     99.6    1.444
-08.0   85    62.56   2758    2703   42456  12842     99.8    1.421
-07.0   86    63.24   2789    2764   43962  12927     99.9    1.398
-06.0   87    63.92   2820    2824   45520  13004    100.0    1.376
-05.0   88    64.60   2850    2886   47126  13072    100.0    1.354
-04.0   89    65.28   2880    2947   48782  13135    100.0    1.332
-03.0   90    65.96   2910    3009   50490  13197    100.0    1.311
-02.0   91    66.64   2940    3071   52258  13257    100.0    1.291  ! Near Maximum !
-01.0   92    67.32   2970    3133   54086  13317    100.0    1.270  ! Near Maximum !
+00.0   93    68.00   2999    3196   55977  13376    100.0    1.251  ! Near Maximum !
+01.0   93    68.68   3028    3258   57933  13434    100.0    1.231  ! Near Maximum !
+02.0   94    69.36   3058    3322   59957  13491    100.0    1.212  ! Near Maximum !
+03.0   95    70.04   3087    3385   62052  13547    100.0    1.193  !DANGEROUS LOAD-DO NOT USE!
+04.0   96    70.72   3116    3449   64221  13602    100.0    1.175  !DANGEROUS LOAD-DO NOT USE!
+05.0   97    71.40   3145    3513   66466  13655    100.0    1.157  !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     93    68.00   3128    3476   69591  12861    100.0    1.144  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     93    68.00   2801    2787   43149  13785     98.2    1.395

 

[treesnake]

My sincere thanks to you sir!