RAD57
Beginner
- Mar 7, 2019
- 35
- 33
Looking for Quick Load help for RL 15.5 for Nosler 55 tipped Varmageddon in 220 Swift, and what is the Heat of Explosion temp for RL 15.5?
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: this_feature_currently_requires_accessing_site_using_safari
Cartridge : .220 Swift
Bullet : .224, 55, Nosler Varmag Btip 17240
Useable Case Capaci: 43.815 grain H2O = 2.845 cm³
Cartridge O.A.L. L6: 2.680 inch = 68.07 mm
Barrel Length : 22.0 inch = 558.8 mm
Powder : Alliant Reloder TS 15.5 *C *T
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 92 35.73 3421 1430 44375 11933 97.2 1.019
-09.0 93 36.13 3459 1461 45842 12056 97.6 1.004
-08.0 94 36.52 3496 1493 47355 12173 97.9 0.989
-07.0 95 36.92 3534 1525 48916 12286 98.3 0.974
-06.0 96 37.32 3571 1557 50528 12394 98.6 0.959
-05.0 98 37.72 3608 1590 52190 12496 98.8 0.945
-04.0 99 38.11 3645 1622 53906 12592 99.1 0.931 ! Near Maximum !
-03.0 100 38.51 3682 1655 55677 12683 99.3 0.917 ! Near Maximum !
-02.0 101 38.91 3718 1689 57505 12768 99.5 0.903 ! Near Maximum !
-01.0 102 39.30 3755 1722 59393 12847 99.6 0.890 ! Near Maximum !
+00.0 103 39.70 3791 1756 61341 12921 99.8 0.877 ! Near Maximum !
+01.0 104 40.10 3828 1789 63354 12988 99.9 0.864 !DANGEROUS LOAD-DO NOT USE!
+02.0 105 40.49 3864 1823 65432 13048 99.9 0.852 !DANGEROUS LOAD-DO NOT USE!
+03.0 106 40.89 3900 1857 67580 13103 100.0 0.839 !DANGEROUS LOAD-DO NOT USE!
+04.0 107 41.29 3935 1891 69798 13150 100.0 0.827 !DANGEROUS LOAD-DO NOT USE!
+05.0 108 41.69 3971 1926 72091 13195 100.0 0.816 !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 103 39.70 3878 1837 67282 12695 100.0 0.842 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 5% relative to nominal value:
-Ba 103 39.70 3687 1660 55447 12976 98.4 0.917 ! Near Maximum !
Thanks again DrMike!Code:Cartridge : .220 Swift Bullet : .224, 55, Nosler Varmag Btip 17240 Useable Case Capaci: 43.815 grain H2O = 2.845 cm³ Cartridge O.A.L. L6: 2.680 inch = 68.07 mm Barrel Length : 22.0 inch = 558.8 mm Powder : Alliant Reloder TS 15.5 *C *T 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 92 35.73 3421 1430 44375 11933 97.2 1.019 -09.0 93 36.13 3459 1461 45842 12056 97.6 1.004 -08.0 94 36.52 3496 1493 47355 12173 97.9 0.989 -07.0 95 36.92 3534 1525 48916 12286 98.3 0.974 -06.0 96 37.32 3571 1557 50528 12394 98.6 0.959 -05.0 98 37.72 3608 1590 52190 12496 98.8 0.945 -04.0 99 38.11 3645 1622 53906 12592 99.1 0.931 ! Near Maximum ! -03.0 100 38.51 3682 1655 55677 12683 99.3 0.917 ! Near Maximum ! -02.0 101 38.91 3718 1689 57505 12768 99.5 0.903 ! Near Maximum ! -01.0 102 39.30 3755 1722 59393 12847 99.6 0.890 ! Near Maximum ! +00.0 103 39.70 3791 1756 61341 12921 99.8 0.877 ! Near Maximum ! +01.0 104 40.10 3828 1789 63354 12988 99.9 0.864 !DANGEROUS LOAD-DO NOT USE! +02.0 105 40.49 3864 1823 65432 13048 99.9 0.852 !DANGEROUS LOAD-DO NOT USE! +03.0 106 40.89 3900 1857 67580 13103 100.0 0.839 !DANGEROUS LOAD-DO NOT USE! +04.0 107 41.29 3935 1891 69798 13150 100.0 0.827 !DANGEROUS LOAD-DO NOT USE! +05.0 108 41.69 3971 1926 72091 13195 100.0 0.816 !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 103 39.70 3878 1837 67282 12695 100.0 0.842 !DANGEROUS LOAD-DO NOT USE! Data for burning rate decreased by 5% relative to nominal value: -Ba 103 39.70 3687 1660 55447 12976 98.4 0.917 ! Near Maximum !
Projection for a 24 inch barrel. Charge won't change, though velocity will differ with different barrel lengths.