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General >> Ammunition, reloading, shooting, etc >> ERROR IN LYMAN 50th RELOADING MANUAL FOR KRAG
http://www.kragcollectorsassociation.org/cgi-bin/yabb2/YaBB.pl?num=1585099192 Message started by Mike4MSU on Mar 25th, 2020 at 1:19am |
Title: Re: ERROR IN LYMAN 50th RELOADING MANUAL FOR KRAG Post by Parashooter on Apr 13th, 2020 at 3:54am FredC wrote on Mar 31st, 2020 at 6:13pm:
Doesn't look real bad. Note pressure estimates are CIP piezo (PMAX 47137psi). Cartridge : .30-40 Krag Bullet : .308, 180, Hornady RN 3075 Cartridge O.A.L. L6: 3.089 inch or 78.46 mm Barrel Length : 30.0 inch or 762.0 mm Powder : IMR 4895 Predicted data by increasing and decreasing the given charge, incremented in steps of 1.25% 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 -05.0 84 38.00 2450 2399 36939 5329 99.1 1.635 -03.8 85 38.50 2477 2453 38212 5380 99.3 1.612 -02.5 86 39.00 2505 2508 39529 5428 99.5 1.587 -01.3 88 39.50 2532 2562 40890 5473 99.7 1.563 ! Near Maximum ! +00.0 89 40.00 2559 2618 42296 5515 99.8 1.540 ! Near Maximum ! +01.3 90 40.50 2586 2673 43751 5554 99.9 1.518 ! Near Maximum ! +02.5 91 41.00 2613 2728 45254 5590 100.0 1.496 ! Near Maximum ! +03.8 92 41.50 2639 2784 46810 5622 100.0 1.474 ! Near Maximum ! +05.0 93 42.00 2666 2840 48418 5652 100.0 1.453 !DANGEROUS LOAD-DO NOT USE! |
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