I know it isn't a direct comparison, but I used a 24" barrel for the Swede and same for 25-06 and one of the top velocity powders for both. All of it could change or be changed, but gives a general idea of both cartridges loaded to 60K PSI running a 120 PT in the 25-06 and a 125 PT bullet in the Swede.
Cartridge : 6.5 x 55 Swedish
Bullet : .264, 125, Nosler PART SP 16320
Useable Case Capaci: 54.421 grain H2O = 3.533 cm�
Cartridge O.A.L. L6: 3.150 inch = 80.01 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-22
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 84 42.64 2423 1630 30011 9671 87.9 1.553
-18.0 86 43.71 2487 1717 32114 10009 89.4 1.511
-16.0 88 44.77 2552 1808 34373 10337 90.8 1.470
-14.0 90 45.84 2617 1901 36798 10654 92.1 1.430
-12.0 93 46.90 2682 1997 39405 10958 93.3 1.385
-10.0 95 47.97 2748 2096 42212 11248 94.5 1.341
-08.0 97 49.04 2813 2197 45235 11522 95.5 1.298
-06.0 99 50.10 2879 2301 48493 11778 96.5 1.256
-04.0 101 51.17 2945 2407 52008 12015 97.3 1.217
-02.0 103 52.23 3011 2516 55808 12232 98.0 1.178 ! Near Maximum !
+00.0 105 53.30 3076 2626 59917 12426 98.6 1.141 ! Near Maximum !
+02.0 107 54.37 3142 2739 64339 12598 99.1 1.105 !DANGEROUS LOAD-DO NOT USE!
+04.0 109 55.43 3207 2855 69098 12744 99.5 1.071 !DANGEROUS LOAD-DO NOT USE!
+06.0 111 56.50 3272 2972 74245 12864 99.8 1.038 !DANGEROUS LOAD-DO NOT USE!
+08.0 114 57.56 3337 3091 79820 12957 100.0 1.005 !DANGEROUS LOAD-DO NOT USE!
+10.0 116 58.63 3401 3211 85868 13023 100.0 0.974 !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 105 53.30 3229 2894 73173 12089 100.0 1.051 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 105 53.30 2866 2279 47762 12032 92.4 1.259
Cartridge : .25-06 Rem.
Bullet : .257, 120, Nosler PART SP 35643
Useable Case Capaci: 60.358 grain H2O = 3.919 cm�
Cartridge O.A.L. L6: 3.250 inch = 82.55 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-25
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 84 46.48 2487 1649 30107 10887 94.5 1.575
-18.0 86 47.64 2553 1737 32213 11215 95.7 1.533
-16.0 88 48.80 2619 1827 34473 11521 96.9 1.492
-14.0 90 49.97 2684 1920 36900 11800 97.8 1.452
-12.0 92 51.13 2749 2014 39506 12052 98.6 1.406
-10.0 94 52.29 2815 2111 42306 12273 99.2 1.361
-08.0 97 53.45 2879 2209 45318 12463 99.7 1.317
-06.0 99 54.61 2943 2308 48562 12619 99.9 1.276
-04.0 101 55.78 3007 2409 52055 12741 100.0 1.236
-02.0 103 56.94 3069 2510 55820 12842 100.0 1.197 ! Near Maximum !
+00.0 105 58.10 3131 2613 59892 12940 100.0 1.159 ! Near Maximum !
+02.0 107 59.26 3193 2716 64290 13034 100.0 1.123 ! Near Maximum !
+04.0 109 60.42 3253 2820 69051 13123 100.0 1.089 !DANGEROUS LOAD-DO NOT USE!
+06.0 111 61.59 3314 2926 74213 13208 100.0 1.055 !DANGEROUS LOAD-DO NOT USE!
+08.0 113 62.75 3374 3033 79813 13287 100.0 1.023 !DANGEROUS LOAD-DO NOT USE!
+10.0 115 63.91 3433 3141 85863 13362 100.0 0.991 !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 105 58.10 3260 2831 74015 12448 100.0 1.067 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 105 58.10 2934 2294 47717 13294 98.1 1.281
