Krag Collectors Association Forum Archive | |
General >> Ammunition, reloading, shooting, etc >> 2400 load....
http://www.kragcollectorsassociation.org/cgi-bin/yabb2/YaBB.pl?num=1544494705 Message started by leadhead on Dec 11th, 2018 at 2:18am |
Title: Re: 2400 load.... Post by Parashooter on Dec 11th, 2018 at 9:55pm
Lyman Cast Bullet Handbook, 3d ed. gives 16 gr. 2400 as starting load for 311290 (208 gr.) @1415 fps. 21 gr. maximum @1716 fps. Tested in 22" barrel.
QuickLOAD estimates ~21K psi for 16.5 gr. - fairly low pressure. (This is not tested data) - Cartridge : .30-40 Krag Bullet : .308, 202, LYM LRN GC 311299 Cartridge O.A.L. L6: 3.089 inch or 78.46 mm Barrel Length : 30.0 inch or 762.0 mm Powder : Alliant 2400 Predicted data by increasing and decreasing the given charge, incremented in steps of 6.061% 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 -12.1 33 14.50 1544 1085 16597 2245 100.0 2.615 -06.1 35 15.50 1610 1180 18765 2367 100.0 2.470 +00.0 37 16.50 1673 1275 21076 2489 100.0 2.343 +06.1 39 17.50 1735 1370 23529 2610 100.0 2.230 +12.1 42 18.50 1794 1465 26128 2729 100.0 2.129 +18.2 44 19.50 1851 1560 28875 2848 100.0 2.038 +24.2 46 20.50 1907 1655 31775 2965 100.0 1.956 +30.3 48 21.50 1961 1751 34830 3081 100.0 1.882 |
Krag Collectors Association Forum Archive » Powered by YaBB 2.6.0! YaBB Forum Software © 2000-2024. All Rights Reserved. |